Depends on the variety. Not all variety plants are the same size or require the same room.

Dave

Dave, not sure the variety, and probably won't know until it grows :). I guess I'll just give it a try and see what happens.

Don't underestimate pumpkins. They are massive plants that take over the garden (typically but depends a little on variety.)

Peter, is it possible to train the vines over the side of a bed (and onto the ground) to keep it from taking over? Or will it do it's own thing.

In my (limited) experience, not really. You can do a bit of training, but the vines are brittle and difficult to control. You can kind of direct it in one direction but trying to keep it in one direction only I don't think will work out. If they can sprawl out in 3 directions, then ok that might work.

This is a picture of my Small Sugar pumpkins from last year, at maybe 65% size. This is 2 plants but mostly just one in the picture. As you can see, it is taking over. They had like 10x10 space in the garden but that wasn't even close to enough. They grew out over the Spirea, onto the ground.. it was a mess. That fence is 6' high.

This is in the garden when they were maybe 40-50% size - 2 plants

Gotcha - thanks for the pics - that helps put things in perspective. I think I'll be looking for a place on the ground to plant it, or give to someone who has a little more room.