Blossom Drop - Illinois Vegetable Garden Guide - University of Illinois Extension

Blossom Drop

Extreme weather conditions sometimes cause fruits to fail to set on tomatoes, beans, and peppers, resulting in a dropping of the affected flowers. Night temperatures below 55°F. in the spring and hot, drying winds in the summer are the chief causes of blossom drop in Illinois, although insects, diseases, and weed killers may sometimes be a factor.