I grow watermelons, cantaloupe, tomatos. cukes, squash, and have even grown a few pumpkins. They are very difficult to grow here. They are not very tolerant to any diseases. If you have fog in August and September you should just forget about wasting your time with pumpkins. They do not do well near any other cucurbits as they will catch any diseases that the other crops have. Aphids will wipe you out as well. If conditions are not perfect then you have a lot of management to do and still something can wipe them out like the plague.