This is the second year my zucchini plants have done this. The end of the vegetable starts shrivelling before it matures enough to pick, and now it's going to my crookneck squash. Is it from too much water? I would greatly appreciate a solution to this dilemma.
Zucchini Squash Shrivelling on Plant Before Fully Mature
Certified GKH Gardening Expert
It sounds like a pollination problem. These articles will help: