Heat Tolerant Lettuce is a Lactuca sativa cultivar bred to thrive when temperatures soar, making it one of the few lettuce varieties that resists bolting during warm seasons. Ready to harvest in just 28 days from direct seeding, this loose-leaf type delivers quick, reliable harvests throughout spring, summer, and fall. Plant it in full sun with moderate water and slightly acidic to neutral soil (pH 6.0-7.0), spacing plants just 1 inch apart in rows 16 inches apart for a densely productive bed.
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Most lettuces surrender to heat and turn bitter by mid-summer, but this variety was specifically selected to stay sweet and tender when other types have already bolted. The rapid 28-day maturity means you can succession plant every 2-3 weeks for continuous harvests without waiting months. Its compact spacing requirements let you pack impressive yields into small garden spaces, making it efficient for both containers and in-ground beds.
Heat Tolerant Lettuce is harvested as tender green leaves for salads, where its heat-resistant genetics allow you to enjoy fresh, homegrown lettuce well into summer months when grocery store options become limited or expensive. Individual outer leaves can be picked repeatedly from the growing plant, extending the harvest window and providing continuous salads from a single planting.
No timeline data available yet for this variety.
Start seeds indoors 4-6 weeks before your anticipated transplant date. Transplant into the garden when seedlings are established and ready to handle outdoor conditions.
Transplant seedlings into the garden once they are hardened off and ready for outdoor conditions. Space transplants 10-14 inches apart in rows 16 inches apart.
Direct sow seeds as soon as soil can be worked in spring. Use row cover immediately after sowing to improve germination and prevent soil crusting. Days to maturity are calculated from the date of direct seeding.
Heat Tolerant Lettuce reaches maturity in 28 days from direct seeding. Harvest individual leaves from the outside of the plant once they reach harvestable size, allowing inner leaves to continue growing for extended harvests. You can also cut the entire plant about 1 inch above the soil line for a full harvest, or remove the whole plant at once. Check plants daily as they approach maturity, since lettuce eventually becomes bitter as it begins to bolt, even heat-tolerant varieties. While picking individual outer leaves helps extend the season, plan to harvest before bolting accelerates.
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