Type
romaine, heat tolerant
Lettuce variety
Jericho Lettuce
A romaine noted for holding quality in warmer weather better than many standard types. It is especially useful for extending lettuce season into late spring or early summer.
Days to maturity
55 to 60
Best for
heat tolerance, warm-region gardens
About Jericho
Jericho is a romaine bred for heat tolerance, with tall, vigorous heads and good summer performance. Leaves stay crisp and sweet for a romaine, making it a strong choice where ordinary lettuce bolts too fast.
Growing Jericho Lettuce
Use Jericho for late spring and summer sowings, but still provide regular water and mulch if heat is intense. Harvest when heads are full but before a seed stalk starts pushing through the center, and thin adequately for airflow in warm weather.
Full growing guide
For planting dates, care, and harvest that apply to all lettuce, see the complete guide.
How to grow LettuceOther lettuce varieties
Variety characteristics are general guidance for US home gardens; performance varies by climate, soil, and season. Seed and plant availability differs by supplier. Page updated Aug 4, 2026.