People say that you have to site your vegetable plot in a location where it will enjoy sun throughout the day. While some vegetables do need plenty of sun to ensure a good crop, there are others that can be grown successfully in partial shade. I came across this article at the Gardening Channel which lists 21 vegetables that can grow in partial shade.

Knowing where to grow your vegetables is almost as important as knowing what types to grow in the first place. Your temperature zone defines what you can easily grow, but your ultimate placement of those chosen vegetables will decide how well they?ll grow for you. Here is a list of full sun, shade, and partial sun plants that grow well in most of North America.
Partial Sun Vegetables
Partial Sun are vegetables that require at least four hours of sunlight per day, but
often thrive with less than six hours of direct sunlight. These are usually listed as
?partial sun? or ?partial shade? veggies in garden stores. Partial sun usually means that the plant could still do well with more sun, and partial shade often means that the plant would do better with four to six hours as a maximum.
When in a bush variety, these do well with more sun (closer to 6 hours) than in vine varieties, which can do more with less if they?re on a trellis.
Keep beets partially shaded and they?ll thrive, even in relatively dry conditions.
Full sun on broccoli will lead to rapid flowering (which ruins the taste) while
partial sun encourages tighter heads and slower flowering.
Although cabbage is broad-leafed, too much sun will dry it out and encourage smaller heads and bigger open leaves.
Too much sun and the carrot plant grows more foliage than root, so limiting sunlight means larger carrots.

Check out the rest of the list at Gardening Channel
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