If overwintering pupae only get rid of their host plants, they may not be protected. Cutworms thrive in living and dead weeds, so kill, till, or remove them as needed. Here are some tips on where to watch for cutworms and how to control them.Ĭutworms can cause tomato damage by eating irregular holes on the surface of the fruit. Cutworms are most active in late spring and early summer, so it’s important to be on the lookout for them if you’re growing tomatoes. They get their name from their habit of cutting through the stem of a plant just above the soil line, causing the plant to wilt and die. Cutworms are small, night-feeding caterpillars that can cause serious damage to young tomato plants. One of the most common pests that can plague a tomato plant is the cutworm.
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