I've not tried to grow squash, but my grandfather gets excellent results. He says that you need to grow them in pairs, two plants to a mound. My dad does the same thing, but he direct seeds and doesn't seem to get quite as much productivity on the winter varieties. But between the two of them there are enough that I don't have to grow squash! They also save the seeds out of last years' produce--make sure to dry them. You might start the seeds indoors and put your plants in a mound after the last frost.