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‘Jericho’ lettuce is a heritage romaine variety of desert origin, renowned for its exceptional heat tolerance . Its crisp , bright green leaves retain a mild, fresh flavor even in high summer temperatures. It forms a robust head and is slow to bolt, making it an ideal variety for hot climates or unpredictable summers. Perfect for crunchy salads , wraps, or as a garnish, it remains one of the best lettuces for extending the season into the height of summer.
Companion plants : Alliums, Radish, Marigold, Broccoli, Bean, Beetroot, Carrot, Nasturtium, Dill, Corn, Cucurbits, Coriander, Strawberry
Negative plants : Cabbage, Brussels sprouts, Celery, Parsley
Spread/Carry : Upright and compact Roman head
Plant height : 25 to 30 cm
Quantity per packet : 100 seeds
Certification : Certified organic by Ecocert Canada
Special features : Very heat resistant, slow to rise, crisp, mild, robust romaine
Leaf color : Bright green
Texture/flavor : Crunchy, soft, refreshing
Cold tolerance : Down to -7C
Sow directly outdoors as soon as the soil is workable , or start indoors 3 to 4 weeks before planting out. Sow seeds 612 mm deep. Germination occurs in 7 to 10 days at temperatures between 12 and 21C , optimum 1618C (avoid temperatures above 25C). Place in partial sun/partial shade (level 2) and water moderately (level 2). Space plants 15 cm apart, with 30 to 45 cm between rows depending on the bed.
Harvest at any stage: young leaves, developed heart, or mature head. However, optimal flavor is achieved after a few cool nights in autumn. Store in sand in a root cellar at 12C for extended preservation.
In crisp romaine salads
In summer wraps , thanks to its good hold
As a Caesar salad or as a base for poke bowls
Lightly pan-fried or grilled for a warm romaine lettuce
In a bright green mixed salad when harvested young
‘Jericho’ lettuce combines resilience , sweetness , and crispness , excelling where other lettuces fail in the heat. An essential heritage romaine for hot gardens or long summers.