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Year-Round IPM Program >
Fruit Development > Other Pests
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Other Pests You May See—Fruit Development
Names to more information on identification and management.
Click on photos to enlarge
Cankerworms
(not usually damaging)
Identification tip: A cankerworm moves by arching its back in a characteristic
inchworm fashion. |
Fall webworm
(not usually damaging)
Identification tip: Caterpillars feed inside silken tents, enlarging the
tents to cover more food as available food is consumed. |
Tent caterpillars
(not usually damaging)
Identification tip: Caterpillars form mats or tents of webbing but feed
outside the tent on leaves. |
Redhumped caterpillar
(not usually damaging)
Identification tip: Caterpillars are yellow with black spots and the fourth
abdominal segment is enlarged into a red hump. |
Tree Borers
American plum borer
Identification tip: Extensive gumming around scaffold crotches, at pruning
wounds, or in crown galls can indicate the presence of this borer. |
Pacific flatheaded borer
Identification tip: Rough, broken bark on a young tree can signify that
a larva is feeding under the bark. |
Shothole borer
Identification tip: Tiny, circular holes about 1/16 inch in diameter are
created when adults emerge from the tree. |
Branch and twig borer
Identification tip: Small, round holes at the axils
of small twigs or branches are caused by adult females.
Branches usually die from larval feeding. |
Peachtree borer
Identification tip: Look for small piles of gum mixed with frass around
a tree base. |
Diseases
Phytophthora root and crown rot
Identification tip: Sparse, pale foliage can indicate
Phytophthora. Cankers can be found in the bark at the crown
area. |
Bacterial canker
Identification tip: A dead branch can signify bacterial
canker. Look for substantial gumming on the bark surface. |
Armillaria root rot (oak root fungus)
Identification tip: Leaves often turn pale and wilt,
usually on one side of the tree. White fungus can be seen if
the bark is peeled from the trunk where it meets the soil. |
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