Beginner Gardening: Upset & Frustrated, 1 by TXBBQ

TXBBQ wrote:
I have already written (under Watermelon Question thread) about issues with my watermelon plant with one of the fruit that had set rotting. I pruned it off, and pruned the entire plant and sprayed with organic Insecticidal Soap, which is supposed to kill those moth-looking little flying bugs that were all over the vines.

That was two days ago, and today the pics tell the story. The little fruit that had set are all rotting (one already totally dead). What in heaven's name is going on? Why is this happening? I water everyday (as told a guy at my local nursery, because of intense TX heat) and my corn plant looks like it's dead too! I'll post the pic in another thread. Can somebody please help? I only have to good size fruit left. Should I cut my losses and harvest those and then prune the whole thing down and start over? Will it grow back? What do I do?