Organic Black-Seeded-Simpson Leaf Lettuce Seeds
Grown and harvested in Ontario, organic Black-Seeded-Simpson Leaf Lettuce seeds take 28 days for baby greens and 45 days for full size maturity. An old time favourite and one of our earliest lettuces. Bright green leaves are tender and productive late into summer. Produces well even when it is too hot, too cold or too dry. Use for baby leaf production or allow to produce full heads. Sizes up quickly.
Lettuce prefers cool conditions and can be planted as soon as the soil can be worked in spring. Best growth occurs at 16-18 degrees Celsius. Sow seed .3 cm deep, firm soil and cover lightly as some light is required for germination. Sow indoors 3-4 weeks before your transplant date. Outdoors space plants 21 cm apart in rows 30-45 cm apart. Continue to sow every 3 weeks throughout the season for a continuous supply of fresh greens. Many lettuce varieties will not germinate at temperatures over 24 degrees Celsius. Sow seed in a shaded location mid-summer. Some varieties do well in the unheated winter greenhouse.