epicfail.net

Many growers have called expressing concern over an apparent lack of fruit set in their pumpkins. As you know, poor fruit set is not likely due to an infectious disease problem. High daytime and nighttime temperatures during most of July may be responsible for the production of fewer female blossoms. Also, high temperatures may keep bees from their normal activities and may interfere with the pollination process itself. Finally, if there is any kind of fruit set and a stressful period begins, it is possible that young fruit will be aborted to save the earlier set.