I have cantalopes growing but when they're about half the size they should be, they shrivel up, why?

Question

Same thing with most of my pumpkins, they grow to about baseball size, then shrivel up.

Answer 1

Sounds like a pollination problem. Unpollinated they will start to produce the fruit and than it will die. Try pollinating the flowers by hand and see if you get a fruit that lives. Just use a small artist's paint bruch and put pollen from one flower to another. In the case of the pumpkin, from a male flower to a female flower.