How many generations do Japanese Beetles typically have in a year?

Japanese Beetles typically have one generation per year. This is primarily influenced by their life cycle, which includes eggs laid in the soil during the summer months, followed by larval development through the fall and winter. The adults emerge in late spring to early summer, which aligns with the timing of their one generation cycle. This single generation can lead to high populations if environmental conditions are favorable, but understanding that they generally only produce one generation annually is crucial for effective pest management strategies. Knowing this helps you time control measures appropriately, targeting them at the right stage of their life cycle.