How to Manage Pests

Pests in Gardens and Landscapes

Pest identification and confirmation—Viruses on strawberries

Strawberry aphids
Strawberry aphids

Transmitted by the strawberry aphid. Some strains can cause severe loss of vigor and yield. Symptoms are more intense when mottle or vein banding virus is also present.
Necrotic shock
Necrotic shock
Caused by tobacco streak virus. Spread in pollen and from wild hosts by unknown vectors. Causes a yellow mottling and asymmetrical distortion of the emerging leaflets.
Vein banding
Vein banding
Spread by the strawberry aphid. No visible symptoms are caused by vein banding alone. In the presence of other viruses, especially crinkle virus, it causes a yellowing of the main leaf veins. Symptoms are masked when mottle virus is present.

Mottle virus
Strawberry mottle virus
Spread by the strawberry and melon aphids. Causes no visible symptoms by itself but, when other viruses such as strawberry crinkle are present, leaves are stunted and distorted, turn yellow at the edges, and curl into a cup shape. Older leaves turn red prematurely.


Statewide IPM Program, Agriculture and Natural Resources, University of California
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