Grubs
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Grubs
Know the Beetle's life cycle, and you'll treat grubs more effectively. The June and Japanese Beetles are by far the worst two pest beetle species. Their young are the fat, c-shaped white grubs that feed on your grass' roots and cause symptoms similar to drought stress. The beetles usually begin their mating flights in June, and burrow to lay eggs in early July. The two to three week period immediately after the adults have "disappeared" is the time to treat. If the grubs are not treated promptly, they will feed voraciously through the fall, descend into the soil to overwinter, and awaken in spring to devour even more roots. Treat grubs when the grubs are young. If you see damage (dead grass), it's too late.
