Wireworms are the larvae of click beetles and a common pest found in field and vegetable crops. Adult click beetles overwinter in the soil and emerge in the early spring, around late April to early May. Each female lays 200 to 400 eggs between late May and early June, depositing them on the soil surface down to a depth of 15 cm (nearly 6 inches).
The larvae hatch within three to seven weeks and spend the next three to five years feeding on roots and germinating seeds and moving up and down in the soil profile. When they’re ready, larvae go through a short pupation, about a month long, and emerge as adult click beetles in the soil. They overwinter there and emerge the following spring to lay eggs and begin the cycle again.
Because of their long and somewhat variable life cycle, it’s important to note that a field infested with wireworms is likely to contain populations at all growth stages, at the same time.