Lettuce has very shallow, condensed roots and requires very little underground space to grow, so it is well adapted to growing in very little space. The University of Ohio recommends that lettuce be planted in boxes that are wide and shallow when planting in containers.
About this Author
Robin Lewis Montanye is a freelance artist, designer and writer. Her articles have appeared in newspapers, national magazines and on several self-help areas of the web. Montanye specializes in gardening articles with information from several universities. She has Internet articles published on Gardenguides.com, eHow.com and Suite101.com.