I lost both of my watermelons one day apart. One day it was looking healthy,
the next day it fall over dead. The day after the second one did the same
thing. I suspect some sort of cutworm or something under the surface of the
soil, though I could not find anything wrong. Cukes and squash are fine. I'm
not going to bother replanting them, I put some cukes and squash in their
place. How can I prevent this in the future?