Iowa zone 5b. I planted two squash plants each between tomato plants which were in three corners of a 4x4' raised bed. This worked out well. The vine stayed in the bed. The squash are just the right size for two people. Excellent.

I only planted 4 of these for now, but I got 100% germination and the plants so far are staying small as in the shape of a bush like the name suggests.