Green cloverworms pass the winter in either the pupal or adult stage. Females lay single eggs on the undersides of the soybean leaves. Eggs produce green worms that feed on these leaves for about four weeks before dropping to the ground to burrow into the leaf litter or soil where they pupate. Adult moths emerge to start the second generation. Japanese beetles overwinter in the soil as the third larval stage and, as the soil warms, move closer to the surface to feed on fine rootlets.
Females burrow into loose, moist sod to deposit eggs.
The eggs hatch after a few weeks and the grubs feed on rootlets until cold weather arrives. Most grasshopper species pass the winter as eggs, laid in masses up to two inches below the soil surface. Containing as many as 120 elongated eggs, these are mainly deposited in field margins and roadsides, but may also be laid in legume or grass fields. Spider mites overwinter as adults in fencerows and woodlots. They move into edges of the field in the summer, developing small colonies on the undersides of leaves.