This is our first time growing pumpkins. The sprouts were labeled 'Jack O Lantern'. Now we have 2 small, very orange pumpkins and 1 green one still growing. My questions are- How long do we leave them on the vine? Will they last till Halloween? Do they keep growing bigger after they turn orange? They sure arent you trypical 'store bought' pumpkin size yet. The stems are looking pretty dry and are withering and Im not sure what I should do with them if they cant make it till Halloween for carving. I thought they wouldnt be ready till then for some reason. Can I feed them to my chickens?