Problem: Root Weevils
Several types of weevils attack strawberries. The brown to black, hard-shelled, 1/4-inch-long adult beetles with long snouts feed on the leaves at night. They hide during the day under leaves and clods of soil. Their feeding causes little damage but is a warning sign that their larvae, grubs, may be present. Only one generation occurs per year. The adults are present from spring through summer, laying their eggs in the crowns of plants in early summer. The grubs that hatch burrow into the soil and feed on the roots until late fall, then resume feeding in the spring. Their feeding reduces berry production and sometimes kills the plant. Adult weevils occasionally become a nuisance in the house. As they migrate in search of more food, they enter homes through open doors and windows and cracks in the foundation. Although they may feed on some houseplants, they do not eat food or clothing.
Monitor adult emergence with pitfall traps (made by burying tin cans to the rim among the strawberries) filled with an inch of soapy water. If you find adult weevils in the water, apply an insecticide labeled for this pest, following label directions. Destroy infested plants and any grubs found in the soil. Do not plant in soil known to be infested.