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Pests and Their Damage—Harvest

On this page
  • Green fruitworm
  • Obliquebanded leafroller
  • Fruittree leafroller
  • San Jose scale
  • European earwig
  • Spotted wing drosophila
  • X-disease
  • Powdery mildew
  • Ripe fruit rot
  • Bird damage
  • Rain damage

Names link to more information on identification and management.

Click on photos to enlarge

Damage caused by green fruitworm
Green fruitworm damage
Identification tip: Larvae chew deep holes in fruit; damaged fruit is often deeply scarred and distorted at harvest.

Feeding damage to blossoms of cherry
Obliquebanded leafroller
Identification tip:
Larvae are yellowish green with brown to black heads; their feeding causes deep depressions in fruit.

Damage caused by fruittree leafroller
Fruittree leafroller damage
Identification tip: Feeding by fruittree leafroller causes shallow, superficial scarring on fruit.

Damage caused by San Jose scale
San Jose scale
Identification tip: Red halos develop around San Jose scale that locate on fruit surfaces.

Damage caused by earwigs
European earwig damage
Identification tip: Feeding causes shallow, irregular holes.

Spotted wing drosophila damage
Spotted wing drosophila damage
Identification tip: When females lay eggs in ripening fruit, the oviposition site forms a small depression. Damage can create entry sites for fungal or bacterial infections.

X-disease symptoms
X-disease (cherry buckskin) symptoms
Identification tip: X-disease causes fruit to be smaller, paler, and more pointy (shown on right) than healthy fruit (left). The fruit stems of affected fruits are shorter and stiffer, causing the cherries to hang differently than the healthy fruit.

Powdery mildew on cherry leaves
Powdery mildew damage
Identification tip: Powdery mildew appears as white, weblike growth on leaves and fruit.

No photo available.

Ripe fruit rot (Botrytis) damage
Identification tip: Look for fruit with brown decay that is covered with a growth of light brown or grey spores; fruit may be soft and watery.


Other damage

Bird damage to cherry fruit
Bird damage
Identification tip: Fruit damaged by birds is partially devoured.

Rain damage to cherry fruit
Rain damage
Identification tip: Rain causes fruit to swell and split.

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