Diseases Acorn squash is subject to all of the diseases other squashes are. The most destructive insects on acorn squash are cucumber beetles, squash bugs, and squash vine borers. Pickleworms, melonworms, and aphids can also become problems if not controlled. See Extension Publication 554 for chemicals and rates to use for controlling insect pests. Spray for insects when bee activity is minimal.
Bees are essential for crop pollination.
Pollination Bees transfer pollen from the male flowers to the female flowers. The first several flowers are male, so do not expect fruit from them. Without pollination, squash fruits will not develop. One hive per acre will furnish enough bees for pollination. Place hive near squash field.