Growing Lettuce

(Best months for growing Lettuce in USA - Zone 5a regions)

Easy to grow. Sow in garden, or start in seed trays and plant out in 4-6 weeks.. Sow seed at a depth approximately three times the diameter of the seed. Best planted at soil temperatures between 46°F and 81°F. (Show °C/cm)
Space plants: 8 - 12 inches apart
Harvest in 8-12 weeks.
Compatible with (can grow beside): Carrots, Onions, Strawberries, Beets, Brassicas, Radish, Marigold, Borage, Chervil, Florence fennel, leeks.
Avoid growing close to: Parsley, Celery

Your comments and tips

03 Jan 15, Keren (USA - Zone 7b climate): Lettuce gets bitter if it's too hot and/or when it bolts. Lettuce is ideal is cool temps, and if grown in hot weather does better in the shade or at least partial shade. Full sun in cool weather is fine. Also, too little water causes butter lettuce. Make sure you are either harvesting the plant all at once, or you pick he outer leaves on a consistent schedule. Picking leaves inconsistently can also cause lettuce to bolt.
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12 Jul 14, sherron hardin (USA - Zone 5a climate): I planted within the time frame as your chat suggested. My lettuce has gotten bitter as it has grown. I have it in full sun. I don't know if that is the reason but it would seem on the second growing it became a little bitter and gets worse as it grows. Any suggestions? Thanks for your help
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