Thanks, Fred. Unfortunately, I don't have the space to let them sprawl. I use slings when needed. The supports I use for squash go up a brick wall and aren't flimsy freestanding trellises, and when vines get really rampant, I let them go up onto my garage roof. I'm not going to try to grow any 30 pound pumpkins or anything, but 7-15 # squash should be doable.
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