I started a few of these guys off from seed and they're developing flowers. The biggest container I have is about 5 gallons and it's long and low like a box. I assumed that would be best.

I think it's about 50cm x 30cm.

Would that be enough for the pumpkin? My balcony is the only place that gets full sun and it's not that huge so I'm not sure how much bigger of a container I can afford.

So, what's the minimum?

Thank you!