Teton Romaine Lettuce Seeds

Days to Maturity: 80

Teton, a new romaine lettuce (also known as cos lettuce), is a leafy vegetable with large, elongated heads that have good potential for dense hearts. The crisp, crunchy, dark green leaves have straight ribs and a mild, slightly sharp flavor. Although romaine is a popular salad ingredient and lettuce wrap, it can also be grilled. Romaine lettuce is considered a superfood for its nutrient rich content, having a high (top 20) Aggregate Nutrient Density Index score (ANDI), or micronutrient-per-calorie density. Romaine is an excellent source of vitamin K, an essential nutrient for bone health, blood clotting, and wound healing. It has levels of folate and vitamin A similar to spinach and is rich in antioxidants.

An herbaceous annual, Teton is a member of the aster (Asteraceae) family. Teton is a tough and fast-growing plant with an upright habit. Versatile and super easy to grow, romaine lettuce prefers a sunny to partly shady location with fertile, organically rich, moist, well-draining sandy loam soil or compost, having a slightly acidic pH of 6.0 to 6.7. Loose, well-tilled soil and consistent water are important for the best germination. Teton has high resistance to downy mildew Bl-EU:21, 24; strong tolerance to lettuce necrotic stunt virus LNSV; and moderate bolt resistance.

A cool-season, semi-hardy vegetable, one of the first to be planted in the garden, lettuce seed can be direct sown as soon as the soil is workable in early spring, about 2 weeks before the last frost date. For fall harvest, sow seeds about 8 weeks before the frost date. Plants can also be started indoors 6 to 8 weeks before transplanting, spring and fall. Lettuce needs cold temperatures to germinate and grow and can withstand light frost and temperatures in the 28 to 32°F range and becomes even sweeter with a light frost. It grows best in temperatures between 45 and 70°F. Temperatures above 70°F and dry soil can trigger bolting; however, if plants do bolt and go to seed, the flowers are very attractive to pollinators. Succession planting every 2 to 3 weeks is recommended for continual harvest.

If you plan to start your seeds indoors, be sure to check out our Bio Dome Seed Starter Kit. With the Bio Dome, you can control the temperature, light, and soil mix to ensure your seeds become strong for transplant.