I have small pumkins, large pumpkins, watermelon (well, only 1) and cantaloupe (only 2 so far). I had one large pumpkin growing (it wasn't really too large yet, maybe slightly bigger than a softball. I looked at it on Saturday evening and it was looking good. Today it was I guess rotten- it was soggy and was yellow instead of green like it had been. Any advice on what I can do to keep these things from rotting? Thanks!