Lettuce

Grow seven different salad greens: arugula, endive, red kale, red and green romaine, Salad Bowl lettuce, and Lolla Rossa lettuce.
6 inches
Sow the seeds directly in the garden as soon as the soil can be made fine and loose. Plant them every 2 inches, covering them firmly with soil.
Mesclun needs plenty of moisture. Water regularly to keep the soil from drying out; however, overwatering or lack of air circulation will cause the leaves to rot.
As the plants begin to crowd, pick individual leaves regularly for use.
Late summer or fall mesclun mix may have to be started indoors, since the seeds may have a difficult time germinating in hot weather.