How to Manage Pests
Pests in Gardens and Landscapes
Several species of caterpillars roll leaves; the garden tortrix is the most common found in California
strawberries. They vary in time of appearance, head capsule color, and location in the state. Frequently
the caterpillars wiggle backward vigorously when disturbed and drop from the leaf suspended by a silken
thread. Moths have a bell-shaped outline when at rest.
Identification of species
Leafroller larvae roll leaves and produce large amounts of webbing while feeding inside. They occasionally
feed on fruit.
Handpick and destroy caterpillars. Remove dead leaves and
trash from the base of plants in late winter.
Parasitic wasps may
naturally keep caterpillars under control. Spot applications
thuringiensis or spinosad may be applied
when populations are high.
Garden tortrix adult
Webbing produced by garden tortrix larva