This is the first time that I have tried to grow pumpkins and I've noticed that the leaves will get white spots on them then will later die. I have checked for bugs, but I have not seen any.I have two plants. The older one got the white spots a while ago, but the leaves just now died. The younger one is just now getting those spots. Its only the leaves about five leaves from the base that are getting those spots. The plants are fairly crowded, I have way too many watermelons and cantaloupes in that same area. I don't know if that has anything to do with it, but I thought I'd mention it. They are "Big Max"

^^White spots on the younger plant^^^^About a week after the older plant got the white spots^^