This year I was trying to grow some birdhouse gourds. I followed the directions to a T. I have very healthy vines, but as soon as the gourds are the size of a cherry tomato, they turn brown and fall off. What have I done wrong ? Thanks. I live in the Pittsburgh, Pa area.
This article should contain the answer you're looking for: https://www.gardeningknowhow.com/edible/vegetables/squash/squash-fruit-falling-off-the-plant.htm