How to Manage Pests

Pests in Gardens and Landscapes

Seasonal development and life cycle — Virus diseases

For the most part, beet western yellows (BWYV), cucumber mosaic virus (CMV), curly top virus, lettuce mosaic, and lettuce infectious yellows (LIY) occur sporadically. All of these pathogens have numerous alternate crop and weed hosts. These pathogens are spread by insect vectors that have fed on the sap of infected plants (aphids, primarily green peach aphids, for beet western yellows virus, cucumber mosaic virus, and lettuce mosaic; whiteflies for lettuce infectious yellows virus; and the beet leafhopper for curly top virus).

Cheeseweed is an alternate host for some viruses

Cheeseweed is an alternate host for some viruses


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