I have a spot out in the back of the property that I would like to grow pumpkins this year. I thought it would also be a good place for my gourd trellis' as the vines would have plenty of room to spread back there. My question is, is there such a thing as cross pollination between these two? Should they not be planted in the same area? I'm not talking on top of each other obviously, but I don't want some weird crosses either. I've grown gourds for years but they've always been off by themselves. Anyone know? Thanks!