How to Grow Superb Summer Squash. "..To make watering easier, sink a pot in the ground at planting time & sow the squash seeds around the outside of the pot. When you fill the pot w/water, it drains out the holes in the bottom, immediately reaching the roots of the plants. Plant a cover crop of hairy vetch around the hills to discourage weeds & feed the soil. The rim of the pot should be an inch or two out of the ground when the hill is finished & there should be no soil in the pot."
How to Grow Superb Summer Squash - Vegetable Gardener