Lettuce

Probably the easiest plant to grow in low light with moderate temperatures is lettuce. It does need a good dose of light to get going, but once 4 leaves are out, it can be moved near a window or at the far lengths of light's reach and grow profusely. Plant in rockwool and cut out a hole in Styrofoam. Place the Styrofoam in water and run one of those long green things that you find in aquariums for a few hours a day. You'll be giving it away you'll have so much.

Offered by John.

Please review the Nutritional Value of lettuce. It could be used as a modest source of Vitamin C, but an adult would have to eat almost 6 cups to meet the USDA. In addition, lettuce is a natural diuretic which can flush the body of water soluble nutrients, this would be undesirable where potable water is scarce. Granted it could be useful for just helping to fill empty stomachs.

Offered by Steve