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Grape >
Year-Round IPM Program >
Delayed-Dormant > Other Pests You May
See
Grape
Other Pests You May See—Delayed-Dormant Period
On this page
- Pocket gophers
- California ground squirrel
- Voles
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- Rabbits
- Grape bud beetle
- Click beetle
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- Branch and twig borer
- Eutypa dieback
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Look for burrows, mounds, tunnels,
runways, or fresh droppings that indicate the presence of
rabbits, squirrels,
pocket gophers, and voles. Also look for branch and twig borer and the
damage it causes on vines and buds. Darkened cankers may indicate the disease, Eutypa.
Names link to more information on identification and biology.
Click on photos to enlarge
Rodents and
rabbits |
Pocket
gophers
Identification tip: Pocket gophers leave characteristic crescent-shaped
mounds from the holes they dig.
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California
ground squirrel
Identification tip: Beside gnawing vines and shoots, ground
squirrels dig burrows that damage root systems. |
Voles (meadow mice)
Identification tip: Girdling of grapevine indicates vole
activity.
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Rabbits
Identification tip: Rabbits damage or kill grapevines by eating through the
bark to the cambium layer. They also chew and gnaw on plastic irrigation lines. |
Beetles |
Grape bud beetle
Identification tip: Adults are a light gray color and about
0.25 to 0.4 inch long. Grape bud beetles are colored a fluorescent
silvery blue when exposed to ultraviolet (UV) light.
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Click beetle
Identification tip: Adults are about 0.4 inch long, reddish
brown to black, with a prothorax that has pointed posterior tips. |
Branch and twig borer
Identification tip: Frass-filled holes at old pruning scars
indicate activity by branch and twig borer.
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Diseases |
Eutypa dieback
Identification tip: During late dormant season pruning, characteristic
wedge-shape cankers can be seen in the cross sections of pruned
vines infected with Eutypa.
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Identification tip: Cut away bark from a canker (adjacent
to a pruning wound) and look for dead brown wood underneath.
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