All Pests: Disorders, Diseases, and Insects
for Blackberries, Blueberries, Raspberries, and Strawberries.

Click here to search for pests by berry type and/or symptom.

Click on the underlined name for pictures and more information, including scouting, and cultural and biological controls.

Common Name, Berry Type
Latin Name
Information/description (short)
Alternaria Fruit Rot for Blueberries
Alternaria spp.
Alternaria infections have greenish gray mycelium and dark olive-green spores. Fungal growth often starts at the stem scar and can completely engulf the berry. Infections remain latent until the fruit ripens. This fungal organism infects blueberry plants beginning at the end of bloom and throughout the fruit development stage, up until harvest. [photo from Michigan State University]
Anthracnose for Raspberries
Elsinoe veneta
A pest that seriously affects black raspberries and occasionally blackberries. Red raspberries and hybrid berries, such as 'Boysenberry' and 'Loganberry', are generally not infected. It can become particularly serious if rains continue late into spring, when spots on canes may be plentiful enough to retard sap flow, thus girdling the canes. [photo from Oregon State University]
Anthracnose for Blackberries
Elsinoe veneta
A pest that seriously affects black raspberries and occasionally blackberries. Red raspberries and hybrid berries, such as 'Boysenberry' and 'Loganberry', are generally not infected. It can become particularly serious if rains continue late into spring, when spots on canes may be plentiful enough to retard sap flow, thus girdling the canes. [photo from Oregon State University]
Anthracnose Fruit Rot for Strawberries
Colletotrichum gloeosporoides and C. acutatum
Open flowers and all fruiting stages are very susceptible to this disease. In warm, wet spring conditions this disease will spread quickly. The hard, circular, sunken, tan/brown colored lesions on fruit make the fruit unmarketable. This disease is prone to strawberry plantings that have a past history of infection.
Anthracnose Ripe Rot for Blueberries
Colletotrichum gloeosporoides and C. acutatum
First, blighting of shoot tips; then, a few flowers turn brown or black. Leaf spots, when they occur, are large or small and roughly circular. As infected berries ripen, the flower end may soften and pucker. Under warm and rainy conditions, salmon-colored spore masses form on infected berries. After harvest, spore masses form rapidly on infected fruit when in cellophane-covered baskets or in plastic clamshell packs. Oregon State University Online Plant Disease Manual [photo from Ontario Ministry of Agriculture and Food]
Aphid, Larger Raspberry (and other species) for Raspberries
Amphorophora agathonica
Aphids rarely do economic damage in the warmer, drier growing regions, however cool, wet conditions favor their populations to build to the point that they can become a significant harvest contaminant and also decrease plant vigor. They can also vector raspberry mosaic virus. [photo by T. Peerbolt]
Aphids for Blueberries
Myzus persicae
Aphids have been identified as the vector of blueberry scorch virus, a lethal disease in blueberries. If a field has Scorch virus present or is in the vicinity of other infected fields, aphid management is critical to control the spread of the disease. [photo by T. Peerbolt]
Aphids: Shallot aphid, Strawberry aphid for Strawberries
Myzus ascalonicus, Chaetosiphon fragaefolii
Aphids vector numerous viruses that can cause major economic injury. Leaves appear crinkled, curled and, sometimes, yellow due to the virus. Damage may spread from small, circular patches to the entire planting. Strawberry varieties differ greatly in virus tolerance/resistance so aphid treatment thresholds differ by variety. [photographer unknown]
Armillaria Root Rot for Raspberries
Armillaria spp.
This disease is rare in caneberries. The symptoms vary depending on how far the disease has progressed. Cane dieback and wilting are common. Infected main roots and crowns often have whitish to cream-colored mycelia just under the bark. The mycelia are fan shaped and about as thick as a piece of paper; they have a characteristic mushroom odor. (University of California IPM Online) [Photo by T. Peerbolt]
Armillaria Root Rot for Blackberries
Armillaria mellea
This disease is rare in caneberries. The symptoms vary depending on how far the disease has progressed. Cane dieback and wilting are common. Infected main roots and crowns often have whitish to cream-colored mycelia just under the bark. The mycelia are fan shaped and about as thick as a piece of paper; they have a characteristic mushroom odor. (University of California IPM Online) [photo by T. Peerbolt]
Armyworms/Climbing cutworms for Raspberries
Many species
Larvae may be present as buds begin to swell and open. They are active at night and feed on primary buds and new growth. Infestations are usually spotty within a field. Early season cutworms are rarely a problem, but if present, their feeding can significantly reduce yield. They are also a potential harvest contaminant that can go undetected until harvest begins. [Photo by W. McDiarmid]
Armyworms/Climbing cutworms for Blackberries
Many species
Larvae may be present as buds begin to swell and open. They are active at night and feed on primary buds and new growth. Infestations are usually spotty within a field. Early season cutworms are rarely a problem, but if present, their feeding can significantly reduce yield. They are also a potential harvest contaminant that can go undetected until harvest begins. [Photo by Shelia Fitzpatrick]
Azalea Bark Scale for Blueberries
Eriococcus azaleas
A recently identified pest in Oregon Blueberries. This small insect is most identifiable from the white protective coverings of mating females that are typically found on the older bark of a blueberry plant. Young crawlers find their way to all parts of the plant where they penetrate the bark and begin feeding.
Bacterial Blight/Bacterial Canker for Blueberries
Pseudomonas syringae pv. Syringae
A water-soaked lesion first appears on canes in January or early February and rapidly becomes reddish brown to black canker. Cankers may extend from a fraction of an inch to the entire length of the 1-year-old cane. Buds in cankers die. If the stem is not girdled, buds above the canker grow. If girdled, the cane portion above the canker dies. Leaves turn orange and wilt if death occurs after buds have leafed out. [photo by T. Peerbolt]
Birds for Blueberries
Many Species
Birds are most problematic just prior to and during harvest, as the fruit is turning blue and the sugar content in the fruit is increasing. Damage is most often caused by robins and starlings but other birds are also known to cause damage. [photo by T. Peerbolt]
Black Root Rot for Strawberries
Rhizoctonia sp., Fusarium spp., and Ramularia spp.
Black root rot symptoms include black discolorations on roots; the entire root or all but the core often darken, look unhealthy, and lack new growth. Foliage is reduced in size, has poor color, and wilts in warm weather. Although many roots rot away completely, they lack the red core discoloration typical of red stele
Blackberry Rust for Blackberries
Phragmidium violaceum
Primarily affecting Evergreen blackberries. Wine colored spots appear on the top of infected leaves. Directly under these spots, on the bottom of these leaves there will be circular patches of cream to yellow spore masses surrounded by a violet tinge. Advanced stages of the disease will also have black spores mixed in with the yellow spores. [photo by T Peerbolt]
Blueberry Gall Midge for Blueberries
Dasineura oxycoccana
This is a recently identified pest; its range and the extent of its damage are not well known in the northwest although it is a serious pest of rabbiteye blueberries in the southeast. The adult blueberry gall midge is a very small fly, about one to three millimeters long, and reddish in color. [photo by Wei Yang]
Blueberry Scorch Virus (BlScV) for Blueberries
(no Latin name)
Blueberry Scorch virus is the most serious disease threat to the blueberry industry in the northwest. All possible precautions need to be taken to contain its spread. In plants infected with Blueberry Scorch, the flower clusters blight just as the petals are opening; young shoots may blight also, turning grayish black. Blighted tissues may remain on the twig but this is not a reliable symptom. Propagation of infected stock can spread the virus. Use only certified clean planting material. [photo by T. Peerbolt]
Blueberry Shock Virus (BlShV) for Blueberries
(no Latin name)
In plants infected with BlShV, flowers and young vegetative leaf shoots suddenly die when flowers are just about to open (shock reaction). The entire bush may be blighted but, more commonly, only a portion of the branches will show symptoms. [photo by T. Peerbolt]
Botrytis (includes tip blight, blossom blight and/or fruit rot) for Blueberries
Botrytis cinerea
Botrytis fruit rot is not as serious a problem in blueberries as it is in some of the other small fruits. However under the right environmental and field conditions it can cause yield losses. The fruit clusters are covered with dense powdery gray spores at harvest or post harvest. Infection from this fungal organism occurs during bloom but remains latent until the fruit is ripe. [photo by T. Peerbolt]
Botrytis Fruit Rot (includes Cane Botrytis) for Raspberries
Botrytis cinerea
Fruit becomes rotted, usually with tufts of gray fungus growing on the surface (Fruit rot). The fungus may also infect leaves and, moving through the petiole, cause cane infections with lesions (Cane botrytis). [photo by T. Peerbolt]
Botrytis Fruit Rot (includes Cane Botrytis) for Blackberries
Botrytis cinerea
Fruit becomes rotted, usually with tufts of gray fungus growing on the surface (fruit rot). The fungus may also infect leaves and, moving through the petiole, cause cane infections with lesions (Cane botrytis). [photo by T. Peerbolt]
Botrytis Grey Mold (includes blossom blight and/or fruit rot) for Strawberries
Botrytis cinerea
This disease can show up at two distinct times during the growing season. The first is during bloom and is called blossom blight. The second is associated with the fruit and is called fruit rot. Blossom blight is characterized by petals and pedicels turning brown. Fruit rot expands rapidly near harvest. In advanced stages, the fungus produces a gray mold over the fruit surface. [photo by T. Peerbolt]
Box Elder Bug for Blackberries
Boisea rubrolineata
A minor pest insect that can be a potential harvest contaminant. The Box Elder lays its eggs on open blooms, potentially damaging them, causing poor druplet formation. Rarely causes economic damage, however, large populations can build up especially in fields adjacent to natural areas containing Ash, Maple, or Box Elder trees.
Brown Marmorated Stink Bug for Strawberries
Halyomorpha halys
Adults have the typical shield shape of other stink bugs. Approximately 5/8 inches long and 3/8 inches wide. They can be distinguished from other species of stink bugs by the light bands on the antennae. {photo by J. Pond}
Brown Marmorated Stink Bug for Raspberries
Halyomorpha halys
Adults have the typical shield shape of other stink bugs. Approximately 5/8 inches long and 3/8 inches wide. They can be distinguished from other species of stink bugs by the light bands on the antennae. {photo by J. Pond}
Brown Marmorated Stink Bug for Blueberries
Halyomorpha halys
Adults have the typical shield shape of other stink bugs. Approximately 5/8 inches long and 3/8 inches wide. They can be distinguished from other species of stink bugs by the light bands on the antennae. {photo by J. Pond}
Brown Marmorated Stink Bug for Blackberries
Halyomorpha halys
Adults have the typical shield shape of other stink bugs. Approximately 5/8 inches long and 3/8 inches wide. They can be distinguished from other species of stink bugs by the light bands on the antennae. {photo by J. Pond}
Cane and Leaf Rust for Blackberries
Kuehneola uredinis
A pest in blackberries, especially in the Oregon Thornless Evergreen and Silvan blackberry cultivars. Hybrid berries are generally not affected by this disease. Wet conditions favor disease development. Canes become brittle and break easily. Premature defoliation can occur if disease pressure is severe. [photo by T.Peerbolt]
Cane and Leaf Spot (aka Septoria Leaf Spot) for Blackberries
Septoria rubi
This fungal disease can be found in many blackberry and hybrid berry fields. Minute, black, fruiting bodies (pycnidia) are formed within infected tissue, mature, and produce spores. Leaf spots vary from light to dark brown and are about 3mm in size. At first, they purplish in color then later turn brown. In older leaf spots, centers are whitish with brown to red borders. [photo from Oregon State University]
Cane Blight for Raspberries
Leptosphaeria coniothyrun
The symptoms of this disease include weak growth and wilting of leaves. Cankers develop on the canes and appear as brown to purple lesions. Tissues in the affected areas are weak and bend easily. When the cankers girdle the stem, it wilts and dies. Infection is often associated with mechanical wounds or other injuries. (Connecuticut Plant Pest Handbook) [photo by T. Peerbolt]
Cherry Fruitworm for Blueberries
Grapholita packardi Z.
The adult is a small, dark gray moth with brown bands on the wings It lays its eggs on small, developing green fruit, beginning at about the time of blossom drop. The eggs hatch in about a week and the young larvae, white with black heads, bore into and feed in the developing fruit. As larvae feed and mature, they become pink with brown heads. [photo from Michigan State University]
Common Leaf Spot for Strawberries
Mycosphaerella fragariae(asexual: Ramularia brunnea)
Foliage is at first dark red or purplish, gradually becoming grayish or almost white with age. Fully developed spots are about 0.12 inch in diameter, with a whitish center and reddish margin. They are scattered widely over the leaf surface, reducing leaf function. Infections occur in moist weather and are most severe in spring and fall.
Crown and Cane Gall for Raspberries
Agrobacterium tumefaciens and A. rubi
Raspberry varieties differ in their susceptibility to this disease. Infection is through cane or crown injuries. It can also be introduced to a field by contaminated rootstock. Symptoms are small rough areas of gall tissue; galls can cause canes to split open. Infected plants will show reduced vigor and stunting. (photo by T. Peerbolt)
Crown and Cane Gall for Blackberries
Agrobacterium tumefaciens and A. rubi
All caneberries are susceptible to crown and cane gall but blackberries (in particular Boysens and Evergreens) are especially sensitive to this bacterial disease. Infection is through cane or crown injuries. It can also be introduced to a field by contaminated root stock. Symptoms are small rough areas of gall tissue; galls can cause canes to split open. [photo by T. Peerbolt]
Dagger Nematode for Blueberries
Xiphinema americanum
Dagger nematodes can vector Tomato Ringspot virus (TRSV) and Tobacco Ringspot Virus. These viruses are rare occurrences in northwest blueberries. Dagger nematodes can vector Tomato ringspot virus (TRSV). Plants infected with TRSV exhibit poor vigor and shoot dieback. Circular chlorotic lesions may appear on the leaves and stems may have necrotic spots. Fruit quality and yield are severely reduced. Plant death may occur, especially in young plantings. Preplant soil fumigation, preferably in the fall, is necessary to control dagger nematodes. [photo
Dagger Nematode for Raspberries
Xiphinema americanum
The dagger nematode, as a vector for Tomato ring spot virus, can cause economic injury at very low population levels. In the absence of the virus, feeding by high concentrations of Dagger nematodes can cause roots to deform and swell. Preplant soil fumigation, preferably in the fall, is necessary to control dagger nematodes. [photo from University of California, Kearney]
Deer for Strawberries
(no Latin name)
Deer feed on plants which can delay maturity, reduce yield, have a negative impact on growth and, in severe cases, cause death of the young strawberries. Deer can be pests year-round during all stages of growth. An integrated approach to control is generally most effective in reducing damage from deer. [photo by T. Peerbolt]
Deer for Blueberries
Many Species
Deer feed on foliage, twigs, buds, and fruit, which can delay maturity, reduce yield, have a negative impact on growth and, in severe cases, cause death of the young blueberry plant. Deer can be pests year-round during all stages of blueberry plant growth. An integrated approach to control is generally most effective in reducing damage from deer. [photo from USDA]
Downy Mildew for Blackberries
Peronospora sparsa
This fungus disease is especially problematic in Boysenberries It overwinters primarily as a systemic infection of canes, crowns, roots, and buds. The disease cycle starts each spring with the production of infected shoots from infected root, crown, and cane buds. [photo from Oregon State University]
Dry Cell (Dry Berry) for Blackberries
Cause is unknown. Individual druplets become shrivelled, dry and hard. In addition, some fruits may have small dry, scabby looking lesions on green, red, and black druplets. (Oregon State University Online Disease Guide) [photo by T. Peerbolt]
Earwig, European (common) for Blackberries
Forficula auricularia
Earwigs can be a significant component of insect harvest contaminants, particularly if there is rain just prior to start of harvest or when the harvest conditions are wet. They can also cause superficial leaf damage from feeding. [photo by A. Antonelli]
Earwig, European (common) for Raspberries
Forficula auricularia
Earwigs can be a significant component of insect harvest contaminants particularly if there is rain just prior to start of harvest or when the harvest conditions are wet. They can also cause superficial leaf damage from feeding. [photo by A. Antonelli]
Garden Symphylan for Strawberries
Scutigerella immaculata
Symphylans are tiny, white and centipede-like. They have 10-12 pairs of legs, are 1/8- to 1/4-inch long and live in the soil feeding on fine roots and organic matter. [photo by K. Gray]
Garden Symphylan for Blueberries
Scutigerella immaculata
Symphylans are tiny, white, centipede-like insects, 1/8- to 1/4-inch long, that live in the soil and feed on fine roots. They are exceptionally injurious to young plants. The symptoms of low vigor and weak growth usually show up sometime between April and June. [photo by K. Gray]
Godronia Canker for Blueberries
Godronia cassandrae, asexual: Fusicoccum putrefaciens
New infections appear as small reddish-brown areas around buds and wounds. As cankers enlarge, their centers turn gray and their margins remain reddish to dark brown. [photo from Oregon State University]
Leaf Scorch for Strawberries
Diplocarpon earlianum (asexual: Marssonia fragariae)
Small, dark purple spots develop on upper leaf surfaces and remain dark purple. A white center never forms, as with common leaf spot. Spots have an irregular outline. If numerous, spots run together, and leaves appear scorched.
Leafroller, Orange tortrix for Blackberries
Argyrotaenia franciscana
Damage from webbing/feeding on foliage is rarely economic, but larvae are a major potential contaminant in harvested fruit primarily in the Willamette Valley and Southwest Washington. The larvae are light brown to yellow green with a brown head. Rolled leaves webbed together form protective nests indicating the presence of leafroller larvae. Adult moths are tan or gray with darker mottling on the forewings. There are three or four overlapping generations per year. [photo by K. Gray]
Leafroller, Orange tortrix for Raspberries
Argyrotaenia franciscana
Damage from webbing/feeding on foliage is rarely economic, but larvae are a major potential contaminant in harvested fruit primarily in the Willamette Valley and southwest Washington. The larvae are light brown to yellow green with a brown head. Rolled leaves webbed together form a protective nest indicating the presence of leafroller larvae. Adult moths are tan or gray with darker mottling on the forewings. There are three or four overlapping generations per year. [photo by K. Gray]
Leafroller, Orange tortrix for Blueberries
Argyrotaenia franciscana
Orange tortrix (OT) is a minor pest in blueberries. It occurs mostly southwest Washington and the Willamette valley where the larval stage is a major crop contaminant of caneberries. Its larvae also occasionally cause damage in blueberries by feeding on developing buds. If the larvae are numerous during harvest, it also has the potential to be a fruit contaminant. [photo by T. Peerbolt]
Leafrollers, Obliquebanded for Raspberries
Choristoneura rosaceana
Damage from webbing/feeding on foliage is rarely economic, but larvae are a potential contaminant in harvested fruit. When disturbed, they wiggle backwards and drop to the ground on a silken thread. Rolled leaves webbed together to form protective nests indicate the presence of leafroller larvae. Adult moths have dark brown bands running at oblique angles across their wings. [photo by T. Murray]
Leafrollers, Obliquebanded for Blackberries
Choristoneura rosaceana
Damage from webbing/feeding on foliage is rarely economic, but larvae are a potential contaminant in harvested fruit. When disturbed, they wiggle backwards and drop to the ground on a silken thread. Rolled leaves webbed together to form protective nests indicate the presence of leafroller larvae. Adult moths have dark brown bands running at oblique angles across their wings. [photo by K. Gray]
Leafrollers, Obliquebanded for Blueberries
Choristoneura rosaceana
The Obliquebanded leafroller feeds on developing buds and leaves and can, subsequently, reduce yields. Later generations feed directly on berries and can be a harvest contaminant. Leafroller larvae overwinter on bushes in the field and, if the winter is warm, they remain active and will feed on cane buds. [photo by T. Peerbolt]
Lecanium Scale for Blueberries
Lecanium spp.
During dormancy, small, yellowish-brown, helmet-shaped scales can be found on blueberry stems and branches. These shells cover and protect scale eggs that will hatch into "crawlers" the following spring and summer. Feeding by the immature crawlers causes stunted and distorted growth, witches’ broom, and reduced fruit yield and quality. [photo by T. Peerbolt]
Lygus Bugs for Strawberries
Lygus lineolaris (tarnished plant bug) and other species
Adults are 0.25 to 0.5 inches long, winged, and marked with a 'V' on the back. They range in color from light green to shades of gray and brown. Nymphs are smaller and wingless.
Mite, Dryberry for Blackberries
Phyllocoptes gracilis
Dryberry mite is a problem primarily in blackberries but can also infest raspberries. The mites are very small, almost invisible to the naked eye. Affected berries turn red, then brown and dry; the whole fruit may be dry or just patches on the fruit. [photo by E. P. Breakey]
Mites, Cyclamen for Strawberries
Steneotarsonemus pallidus
Cyclamen mites stunt plants and reduce fruit production. Symptoms are similar to virus symptoms (curled, crinkled leaves). Small bumps felt on leaf midvein and petiole can be indicative of mite feeding ‘Totem' strawberries are very susceptible to cyclamen mite damage. Damage photo by A. Artonelli
Mites, Twospotted Spider for Blackberries
Tetranychus urticae
Spider mite feeding reduces plant vigor and may cause leaves to be mottled, turn brown and drop prematurely. Populations can increase rapidly after harvest through early September. [photo by K. Gray]
Mites, Twospotted spider for Strawberries
Tetracanychus urticae
Adult mites are about 0.02 inch long. They have eight legs and are light tan or greenish in color with a dark spot on each side of their back. In fall and again in spring, overwintering forms appear as bright orange globules. [photo by K. Gray]
Mites, Twospotted Spider for Raspberries
Tetranychus urticae
Spider mite feeding reduces plant vigor and may cause leaves to be mottled, turn brown and drop prematurely. Populations can increase rapidly after harvest through early September. (photo by K. Gray]
Mites, Yellow Spider for Raspberries
Eotetranychus carpini borealis
Yellow mites are about two-thirds the size of Twospotted mites and much paler in color. They also tend to build up earlier in the season than Twospotted mites. Their feeding reduces plant vigor and may cause leaves to be mottled, turn brown, and drop prematurely. [photo by M. Bounfour]
Mummyberry for Blueberries
Monilinia vaccinii-corymbosi
Mummyberry is one of the most serious diseases to affect blueberries and can cause nearly 100% yield loss if infection is widespread. It will also affect the following year’s crop. [photo by T. Peerbolt]
Orange Rust for Blackberries
Arthuriomyces peckianus and Gymnoconia nitens
Rare, but extremely serious economically. Fungi systemically infect the plants and, because of the infection, floricanes never produce flowers. Plants should be quickly removed and destroyed. Proper diagnosis is important. This disease can be confused with cane and leaf rust. (photo from Oregon State University)
Phomopsis Twig Blight for Blueberries
Phomopsis vaccinii
This fungus overwinters on infected plant debris; infection occurs through flower buds and wounds from budbreak to bloom, causing twig, flower, or shoot dieback. Twig blight is not common in Oregon and Washington and growers usually don’t treat for it. [photo from Michigan State University]
Phytophthora Root Rot for Raspberries
Phytophthora spp.
Root rot is a primary limiting factor in growing raspberries in the northwest. Roots become rotted and lack fibrous roots; canes and leaves on mature plants wilt, turn yellow and die. Plants may appear to recover, but new roots are often weak and lack lateral development. [photo by T. Peerbolt]
Phytophthora Root Rot for Blueberries
Phytophthora spp.
This disease occurs in blueberries only on poorly drained sites. Infection can move from the roots to the crown and stems; the rot is firm, not soft. Infected roots transport water and nutrients poorly, causing small, reddened leaves and overall plant stunting. Smaller roots, then larger ones, die as the disease progresses.
Powdery Mildew for Blackberries
Sphaerotheca macularis
Blackberries and raspberries are usually not affected by this fungal disease but 'Boysenberry' is very susceptible. Warm, dry weather favors development of this disease. In spring, ascospores are the primary inoculum. Severe mildew retards, dwarfs, and distorts plant parts and makes fruit unsalable. [photo from Oregon State University]
Powdery Mildew for Strawberries
Sphaerotheca macularis f. sp. Fragariae
Edges of infected leaflets curl up, exposing undersides that often are reddened and coated with a grayish white powdery mildew fungus. Diseased leaves later turn purplish or red. [photo by T. Peerbolt]
Powdery Mildew for Raspberries
Sphaerotheca macularis
The characteristic symptom is a white powdery appearance in blotches on the leaf, cane or tip surface. This white mycelia can then attack the fruit also. Severe mildew retards, dwarfs, and distorts plant parts and can make the fruit unsalable. [photo from Oregon State University]
Purple Blotch for Blackberries
Septocyta ruborum
This disease affects all blackberries and hybrid berries. During winter and spring, lesions become purple with a red margin. Affected areas develop into cankers and girdle canes. Severely affected canes die in spring. (photo from Oregon State University)
Raspberry Beetle for Raspberries
Byturus unicolor
Formerly called the Western Raspberry Fruitworm, this is a small (1/6 inch) golden colored beetle that whose larvae causes feeding damage on blooms and fruit and is also a major crop contaminant during harvest. Although it has been found in the Oregon and southwest Washington, it has only been an economically important pest in northern Washington and British Columbia. Adults emerge from the soil during April and May and feed on fruit buds and unfolding leaves. The leave a distinct feeding pattern on the leaves. Treatments are usually targeted at the adults prebloom to prevent larval damage and contamination later in the season. A new style of monitoring trap has recently been introduced that will increase the effectiveness of control strategies. [photo by K. Gray]
Raspberry Bushy Dwarf Virus (RBDV) for Blackberries
(no Latin name)
While this is the major disease of raspberries in Canada and northern Washington, it is also found in 'Boysenberry', 'Loganberry' and 'Marion' blackberries. Fruit from infected plants are often crumbly or small and do not make IQF grade (the fruit is sold at a lower value and used for juice, jam or puree). RBDV is spread by pollen and vectored by bees. [photo from Oregon State University)
Raspberry Bushy Dwarf Virus (RBDV) for Raspberries
(no Latin name)
This is a major disease of many red and black raspberry cultivars and reduces the useful life of the plant by 50-75%. It is also found in 'Boysenberry', 'Loganberry' and 'Marion' blackberries. Fruit from infected plants are often crumbly or small and do not make IQF grade (the fruit is sold at a lower value and used for juice, jam or puree). RBDV is spread by pollen and vectored by bees. [photo by T. Peerbolt]
Raspberry Crown Borer for Raspberries
Pennisetia marginata
The raspberry crown borer is a clearwing moth that closely resembles a yellowjacket wasp. The overwintering first-year larvae are white and about 1/4 inch long. They begin to feed in early March on cane buds around the plant crown. Second year larvae up to 1 inch long feed in cane bases and can kill attacked canes. Feeding in roots and in crown weakens blackcaps, boysenberries, loganberries, and blackberries and may kill raspberries. [photo by J. Troubridge]
Raspberry Crown Borer for Blackberries
Pennisetia marginata
The raspberry crown borer is a clearwing moth that closely resembles a yellowjacket wasp. The overwintering first-year larvae are white and about 1/4 inch long. They begin to feed in early March on cane buds around the plant crown. Second year larvae up to 1 inch long feed in cane bases and can kill attacked canes. Feeding in roots and in crown weakens blackcaps, boysenberries, loganberries, and blackberries and may kill raspberries. [photo by J. Troubridge]
Red Stele for Strawberries
Phytophthora fragariae var. fragariae
This disease can show up at two distinct times during the growing season. The first is during bloom and is called blossom blight. The second is associated with the fruit and is called fruit rot. Blossom blight is characterized by petals and pedicels turning brown. Fruit rot expands rapidly near harvest. In advanced stages, the fungus produces a gray mold over the fruit surface. [photo from University of Illinois]
Redberry Mite for Blackberries
Acalitus essigi
Evergreen blackberries are infested most often, but other caneberries are susceptible. Mites overwinter as adults in bud scales and other crevices. The four-legged mite is only 1/50 inch long. It feeds at the base of the berry drupelets in spring and summer, which causes persistence of red color at harvest time. (Oregon State University PNW Insect Management Handbook) [photo from University of California IPM Online]
Root-leision Nematodes for Strawberries
Pratylenchus penetrans and P. crenatus
Root-lesion Nematodes are microscopic worm like animals that feed on the roots. Infected plants are dwarfed, off-color, and grow poorly. Damage is frequently seen as spots in the field. Roots have brown lesions. [photo from Oregon State University]
Root-lesion Nematode for Raspberries
Pratylenchus spp.
These nematodes are migratory endoparasites; part of the population is in soil and part is in the roots at all times. Infected plants are dwarfed, off-color, and grow poorly. (Oregon State University Online Plant Disease Manual) [photo from Oregon State University]
Sawfly for Raspberries
Monophadnoides geniculatus
Sawfly is a minor pest of raspberries in the northwest that can be confused with leafrollers. In the late spring, larvae roll leaves and feed on undersides of leaf. Their feeding activity usually doesn't pose a problem but they can be a contaminant in mechanically harvested fields. [photo by K. Gray]
Slugs for Blueberries
Limax spp., Arion spp., Deroceras spp.
Slugs are not a major blueberry pest. However, given the right environmental and field conditions they can be numerous enough to cause economic damage. Slugs can climb up the blueberry plant and feed on foliage and berries. Their feeding and the slime trails they leave behind can reduce fruit quality. They can also be a contaminant in the harvested fruit. [photo by R. Berry]
Slugs for Raspberries
Limax spp., Arion spp., Deroceras spp.
Slugs can climb up the raspberry canes and feed on foliage and berries; their feeding and the slime trails they leave behind can reduce fruit quality. They can also be a contaminant in the harvested fruit. They are most likely to be a problem in cool, wet summers. [photo by Tom Peerbolt]
Slugs for Blackberries
Limax spp., Arion spp., Deroceras spp.
Slugs may climb canes and move onto berries, on which they become contaminants. They are most likely to be a problem in cool, wet summers. [photo by Tom Peerbolt]
Slugs for Strawberries
Limax spp., Arion spp., Deroceras spp.
Slugs can be a major problem during harvest when they feed on berries causing loss of quality. Damage is accompanied by slime trails, which can also render fruit unmarketable. They can also be a harvest contaminant. The slug population is closely correlated to weather conditions during harvest. Cool, wet conditions can lead to major slug problems. [photo by Tom Peerbolt]
Snowy Tree Cricket for Raspberries
Oecanthus fultoni
This is a rare pest in northwest raspberries. Females drill small holes in canes to deposit eggs. Adults are winged, but otherwise resemble nymphs. Tree crickets are whitish to light green, with slender bodies and long antennae. The snowy tree cricket has black spots on the first two antennal segments. [photo from the Ontario Ministry of Agriculture]
Spittlebug for Strawberries
Philaenus spumarius
Spittlebugs cause little economic injury but they are a nuisance for pickers. White, slimy froth that resembles spittle surrounds the tiny yellow nymphs in their feeding places on new growth. The nymphs suck juices from leaves and fruit spurs and can cause them to become distorted and stunted. Resulting in some reduced yield and poorer fruit quality. [photo by K. Gray]
Spotted Wing Drosophila for Blackberries
Drosophila suzukii
The Spotted Wing Drosophila (SWD) adult flies are small (2-3 mm) with red eyes. The male has a black spot on the tip of each wing. SWD can lay eggs in fully intact under ripe, ripe, damaged or over ripe fruit. The eggs soon hatch into larvae (maggots) that are very small and white. They feed on the fruit and cause it to soften or collapse. After maturing, the larvae pupates for a varied period of time before reaching adulthood. Like other vinegar flies, SWD has a short life cycle that, depending on temperature, can be one or several weeks.
Spotted Wing Drosophila for Strawberries
Drosophila suzukii
The Spotted Wing Drosophila (SWD) adult flies are small (2-3 mm) with red eyes. The male has a black spot on the tip of each wing. SWD can lay eggs in fully intact under ripe, ripe, damaged or over ripe fruit. The eggs soon hatch into larvae (maggots) that are very small and white. They feed on the fruit and cause it to soften or collapse. After maturing, the larvae pupates for a varied period of time before reaching adulthood. Like other vinegar flies, SWD has a short life cycle that, depending on temperature, can be one or several weeks.
Spotted Wing Drosophila for Blueberries
Drosophila suzukii
The Spotted Wing Drosophila (SWD) adult flies are small (2-3 mm) with red eyes. The male has a black spot on the tip of each wing. SWD can lay eggs in fully intact under ripe, ripe, damaged or over ripe fruit. The eggs soon hatch into larvae (maggots) that are very small and white. They feed on the fruit and cause it to soften or collapse. After maturing, the larvae pupates for a varied period of time before reaching adulthood. Like other vinegar flies, SWD has a short life cycle that, depending on temperature, can be one or several weeks.
Spotted Wing Drosophila for Raspberries
Drosophila suzukii
The Spotted Wing Drosophila (SWD) adult flies are small (2-3 mm) with red eyes. The male has a black spot on the tip of each wing. SWD can lay eggs in fully intact under ripe, ripe, damaged or over ripe fruit. The eggs soon hatch into larvae (maggots) that are very small and white. They feed on the fruit and cause it to soften or collapse. After maturing, the larvae pupates for a varied period of time before reaching adulthood. Like other vinegar flies, SWD has a short life cycle that, depending on temperature, can be one or several weeks.
Spur Blight for Raspberries
Didymella applanata
This fungus overwinters on infected canes. Spores released from lesions infect floricane leaves showing numerous brown necrotic spots. Infected primocane foliage symptoms usually appear as a brown, wedge-shaped lesion. The fungus then moves through the leaf and petiole and is most apparent as a purplish/brown lesion around the bud on the lower portion of primocanes. This symptom on primocanes may not be seen until mid-harvest or thereabouts. [photo by P. Bristow]
Stamen Blight for Blackberries
Hapalosphaeria deformans
When present, this disease can be severe. It can affect blackberries and hybrid berries, particularly Boysenberry. When infected fruit develops, the receptacle is constricted, and a number of drupelets either fail to develop or do so unevenly. Ripening may be uneven, and fruit is hard and difficult to remove from the receptacle. [photo from Oregon State University]
Stinkbug for Raspberries
Euschistus conspersus, and other species
All adults are shield shaped but color and size can vary. Adults and egg masses on ripe fruit can cause quality issues and can also be a contaminant on harvested fruit. [photo by T. Peerbolt]
Stinkbug for Blackberries
Euschistus conspersus, and other species
All adults are shield shaped but color and size can vary. Adults and egg masses on ripe fruit can cause quality issues and can also be a contaminant on harvested fruit. [photo by K. Gray]
Strawberry crown moth for Strawberries
Synanthedon bibionipennis
Strawberry crown moth is primarily a pest in southern Washington and Oregon. Adults are clear winged moths that resemble yellow jackets and fly in June and July. Larvae are white with a brown head and approximately one inch long and overwinter in strawberry crowns and roots. [photo by K. Gray]
Strawberry Crown Moth for Raspberries
Synanthedon bibionipennis
Adults are clear winged moths that resemble yellow jackets. Larvae can girdle the crowns and seriously injure black raspberries and occasionally also cause economic damage in red raspberries and blackberries. Plants are stunted and have poor vigor. It has been found in berry crops in the Willamette Valley and Southwest Washington. [photo by K. Gray]
Strawberry Crown Moth for Blackberries
Synanthedon bibionipennis
Adults are clear winged moths that resemble yellow jackets. Larvae can girdle the crowns and seriously injure black raspberries and occasionally also cause economic damage in red raspberries and blackberries. Plants are stunted and have poor vigor. It has been found in berry crops in the Willamette Valley and Southwest Washington [photo by K. Gray]
Thrips for Blackberries
Frankliniella spp.
Common flower feeders and, when abundant, have been reported to cause blossom blasting. They can also feed on fruit and be a contaminant on harvested fruit. Usually not a major problem; control measures seldom used. Can be a problem in specialty packs (e.g., kosher). [unknown photographer]
Thrips for Raspberries
Frankliniella spp.
Common flower feeders and, when abundant, have been reported to cause blossom blasting. They can also feed on fruit and be a contaminant on harvested fruit. Usually not a major problem; control measures seldom used. Can be a problem in specialty packs (e.g., kosher). [photographer unknown]
Tomato Ringspot Virus (TRsV) for Raspberries
(no Latin name)
This virus is vectored by dagger nematodes (Xiphinema americanum) and spread within a field is often slow. Nematodes can be moved on any equipment that moves soil including wheels of harvesters, sprayers, tractors etc. Even though the virus moves slowly through a field it can have a devastating impact on production. Plants grow very poorly producing few short canes with small crumbly fruit. [photo by T. Peerbolt]
Verticillium Wilt for Raspberries
Verticillium dahliae and V. albo-atrum
Black raspberries are especially susceptible to this disease. New canes often wilt and bluish stripes or ribbons of infected tissue may extend up the canes from the ground. Leaves can wilt or take on a scorched appearance. Plants decline and eventually die. Interaction with the root-lesion nematode can increase disease incidence and severity. [photo from Oregon State University]]
Verticillium wilt for Strawberries
Verticillium dahliae and V. albo-atrum
Individual plants wilt, sometimes in patches in the field. Plants are most severely affected in their first year. Older leaves wilt and tend to curl up along the midvein. Inner (younger) leaves are small, bluish and dull. Plants often are stunted, dry, and flattened with small yellowish leaves, especially as fruit ripens. Brownish streaks occur in vascular tissue of crown roots or at the base of the petiole. [photo by T. Peerbolt]
Voles for Blueberries
Microtus spp.
Voles, also known as field mice, feed on plant roots and foliage near the ground; their gnawing and chewing can girdle roots, crowns, canes, and the trunk of the plant. Subterranean feeding activity also creates air pockets along the root zone. Presence of voles is indicated by chewing marks on canes and roots; surface runways in sawdust or grass row middles; and tunnel entrance holes about one inch in diameter. [unknown photographer]
Weevil, Black Vine Root for Strawberries
Otiorhynchus sulcatus
This weevil has small yellow patches on its back, about 1/4- to 1/2-inch long. They feed on foliage, leaving characteristic notch marks on leaf margins, although this damage is usually insignificant to plant vitality, it is valuable for detecting their presence. The larvae are white with tan heads, and have no legs. [photo by J. Troubridge]
Weevil, Black Vine Root for Blackberries
Otiorhynchus sulcatus
Weevils contribute to serious economic losses as a contaminant in harvested fruit. Eggs that were laid in the soil prior to or during and after harvest will hatch into young larvae that then feed on roots. The adults appear after bloom, beginning in May and continuing through and after the harvest season. [photo by J. Troubridge]
Weevil, Black Vine Root for Raspberries
Otiorhynchus sulcatus
Weevils contribute to serious economic losses as a contaminant in harvested fruit. Eggs that were laid in the soil prior to or during and after harvest will hatch into young larvae that then feed on roots. The adults appear after bloom, beginning in May and continuing through and after the harvest season. [photo by J. Troubridge]
Weevil, Black Vine Root for Blueberries
Otiorhynchus sulcatus
Black Vine is one of many root weevil species that can be found in blueberries. Root weevil larvae overwinter two to eight inches deep in the soil and can be found in fields prior to planting. They are 1/4- to 1/2-inch long, are white with tan heads, and have no legs. They feed on small roots and can quickly reduce the vigor of young plants. [photo by K. Gray]
Weevil, Clay Colored for Raspberries
Otiorhynchus sinularis
Adults root weevils can cause serious economic losses as a contaminant in harvested fruit. Adults appear after bloom, beginning in May and continuing through July. [photo by J. Troubridge]
Weevil, Obscure Root for Raspberries
Sciopithes obscurus
This species is part of the complex of a number of weevil species that are found in raspberries. The adults appear after bloom, beginning in May and continuing through and after the harvest season. Control measures of the adults should be taken early prior to egg laying. Eggs that were laid in the soil prior to or during and after harvest will hatch into young larvae that then feed on roots. [photo by J. Boyd]
Weevil, Obscure Root for Blackberries
Sciopithes obscurus
This species is that it spends most of its time in the plant canopy and is less susceptible to the basal sprays than the other weevils. The adults appear after bloom, beginning in May and continuing through and after the harvest season. [photo by K. Gray]
Weevil, Rough Strawberry Root for Strawberries
Otiorhynchus rugosostriatus
Rough Strawberry is one of many root weevil species that can be found in strawberries. But Rough strawberry root weevil, unlike most of our other pest weevil species, lay many of their eggs in late summer/early fall. They also tend to feed at the base of the plants and in the detritus. This has allowed them to escape many of the insecticide controls used in spring. [photo by K. Gray]
Weevil, Rough Strawberry Root for Raspberries
Otiorhynchus rugosostriatus
Adults are snout-nosed beetles and, depending on species, about 1/2- to 3/4-inch long, black to brown in color. Adult root weevils can cause serious economic losses as a contaminant in harvested fruit. The last few years has shown a species shift in weevil contaminant pests, in favor this species in some growing areas. Rough strawberry root weevil, unlike most of our other pest weevil species, lay many of their eggs in late summer/early fall. This has allowed them to escape many of the insecticide controls used in spring. Adults appear after bloom, beginning in May and continuing through July. [photo by K. Gray]
Weevil, Rough Strawberry Root for Blueberries
Otiorhynchus rugosostriatus
Root weevil larvae overwinter two to eight inches deep in the soil and can be found in fields prior to planting. They are 1/4- to 1/2-inch long, are white with tan heads, and have no legs. They feed on small roots and can quickly reduce the vigor of young plants. [photo by K. Gray]
Weevil, Rough Strawberry Root for Blackberries
Otiorhynchus rugosostriatus
Adults are snout-nosed beetles and, depending on species, about 1/2- to 3/4-inch long, black to brown in color. Adult root weevils can cause serious economic losses as a contaminant in harvested fruit. The last few years has shown a species shift in weevil contaminant pests, in favor of this species in some growing areas. [photo by K. Gray]
Weevil, Strawberry Root for Blackberries
Otiorhynchus ovatus
The adults appear after bloom, beginning in May and continuing through and after the harvest season. They are still present after harvest however control measures of the adults should be taken early prior to egg laying. Eggs that were laid in the soil prior to or during and after harvest will hatch into young larvae that then feed on roots. [photo by K. Gray}
Weevil, Strawberry Root for Raspberries
Otiorhynchus ovatus
Adults are snout-nosed beetles 1/2-inch long, brownish in color. This species is part of the complex of a number of weevil species that are found in raspberries and contributes to serious economic losses as an insect contaminant in harvested fruit. [photo by K. Gray}
Weevil, Strawberry Root for Blueberries
Otiorhynchus ovatus
Root weevil larvae overwinter two to eight inches deep in the soil and can be found in fields prior to planting. They are 1/4- to 1/2-inch long, are white with tan heads, and have no legs. They feed on small roots and can quickly reduce the vigor of young plants. Adult weevils are present primarily in June, July and August. [photo by K. Gray]
Weevil, Strawberry Root for Strawberries
Otiorhynchus ovatus
These weevils feed on foliage, leaving characteristic notch marks on leaf margins, although this damage is usually insignificant to plant vitality, it is valuable for detecting their presence. They are 1/4- to 1/2-inch long. The larvae are white with tan heads, and have no legs. [photo by K. Gray]
Winter Moth/Bruce Spanworm for Raspberries
Operophtera brumata, O. bruceata
Winter Moth and Bruce Spanworm are two very closely related species. Larvae appear in late winter/early spring before leaf break and can cause damage by feeding on the buds and thereby reducing yield. They are an occasional pest in raspberries. [photo by T. Peerbolt]
Winter Moth/Bruce Spanworm for Blueberries
Operophtera brumata, O. bruceata
These are two very closely related species. Larvae appear in late winter/early spring before leaf break and can cause damage by feeding on the buds and thereby reducing yield. Adult male fly in early winter and are mottled brown moths about one inch long. Female moths are wingless. [photo by T. Peerbolt]
Winter Moth/Bruce Spanworm for Blackberries
Operophtera brumata, O. bruceata
Winter Moth and Bruce Spanworm are two very closely related species. They have seldom been identified as an economic pest in blackberries but their feeding habits are such that it is difficult to assess their impact. Larvae appear in late winter/early spring before leaf break and can cause damage by feeding on the buds and thereby reducing yield. [photo by T. Peerbolt]
Yellow Rust for Raspberries
Phragmidium rubi-idaei
Leaf infections in spring and early summer create a yellowish spotting on the upper leaf surface. By summer, another yellow spore stage appears on the lower leaf surface. By harvest, black overwintering spores appear in the yellow uredinia on the lower leaf surface. (Oregon State University Online Plant Disease Manual) [photo by T. Peerbolt]

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