Mixed root weevil larval populations, Burlington, WA. Injured plants may develop a greenish-yellow cast that does not respond to fertilization and watering. Life cycle. Root weevil larvae (Both feed on plant roots as larvae. Strawberry Root Weevil Control. Semi-circular notches at leaf edges There are several species of root weevils that feed on strawberries. Both adults and larvae feed primarily upon strawberry plants but will also attack bramble and evergreens such as pine and yew. look similar in the adult form and as larvae. Identification Weevil larvae, or grubs, feed on strawberry roots. Environmental Entomology, 7(4):495-498. They are found in the soil around the plant or imbedded in the crown. The parasitic nematode, Steinernema carpocapsae, provides control of strawberry root weevil larvae in mint. Strawberry root weevil adult. See page 109. Imported Longhorned Weevil larvae feed mostly on aster, clover and turfgrass while Strawberry Root Weevil larvae feed on the roots of strawberry plants, evergreen trees and shrubs. Larvae feed on roots. Pest description and crop damage Black vine weevil (BVW) is probably the most common weevil to infest strawberries, but the strawberry root weevil (SRW) and rough strawberry root weevil (RSRW) are also pests. Both adults and larvae feed primarily upon strawberry plants but will also attack bramble and evergreens such as pine and yew. It is a very widespread and common insect. Larvae and pupae complete development in the spring, emerging as adults in May or June; overwintered adults become active in strawberries in May. Having a strawberry root weevil infestation in your home can be upsetting. Strawberry root weevil (Otiorhynchus ovatus) The strawberry root weevils are harmless beetles that become a household nuisance when they invade homes during the summer months, sometimes in enormous numbers. The wing covers are marked by many rows of small pits. The strawberry root weevil (SRW) is the primary species in the root weevil complex attacking mint that includes the black vine, rough strawberry and obscure root weevil. After hatching, the larvae work their way into the soil and feed on strawberry roots and crowns through the fall. The most common in the garden is the black vine root weevil or the strawberry root weevil. Root weevils are found in all growing areas in the northern U.S. and Canada, feeding primarily on strawberry and raspberry, but will also attack loganberry, blueberry, grapes, azalea, hemlock, rhododendron, primrose and many other ornamentals. Root weevil larvae can be devastating to conifer seedlings. In nurseries, they are known to be pests of some evergreen shrubs. The cool, shady study area within the windbreak had high root weevil pressure, but was not optimal for strawberry production. However, there are several weevil pests, including strawberry root weevils. , strawberry root weevil, O. ovatus, and black vine weevil, O. sulcatus. Locating Root Weevil Larvae You can locate root weevil larvae by digging about 6 inches beneath or beside a strawberry plant. Larvae and pupae complete development in the spring, emerging as adults in May or June; overwintered adults become active in strawberries in May. Strawberry Root Weevil Larva: Strawberry Root Weevil Adult: Larvae are c-shaped, cream-colored with a brown head capsule. During late summer and early autumn black vine weevil and rough strawberry root weevil are more commonly observed indoors. 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