Here's a simple technique that will give you sweeter, crisper winter vegetables than any you can buy at the store. This method takes advantage of the fact that some vegetables can survive freezing temps & remain fresh, even when buried under a blanket of snow. You can store carrots, beets, parsnips, turnips, celery, rutabagas, cabbages, leeks, kale, & spinach in the garden through winter by using this mulching technique.
Square Foot Garden. Very well organized, like the companion plants, good mixing of different nitrogen pulling plants throughout the space, wouldn't place the potatoes and watermelon in a square foot garden like this and I don't think they listed supports for the peas.
VEGETABLES THAT DON'T GROW WELL TOGETHER: Cucumbers thrive when planted near bush beans, lettuce and radishes, but they choke when planted near potatoes. Beans, beets, cabbage, carrots, cauliflower, corn, cucumbers and strawberries make good neighbors -- as long as you plant the onions, garlic, leeks and shallots elsewhere. (Click link for more companion planting dos and don'ts. )