Helping You Become a More Successful Gardener
Gerald L. Klingaman
LACTUCA sativa 'Black Seeded Simpson'
Garden Lettuce, Looseleaf Lettuce
The heirloom looseleaf lettuce, ‘Black Seeded Simpson’, was first introduced around 1850 and is still popular today. Its large, crinkly, bright green leaves form loose heads that are heat tolerant and slow to bolt. This is one of the best varieties to replant for a continuous harvest. The leaves are ready to harvest 40 to 50 days after planting and heads can be harvested in 60 to 65 days.
Lettuce is a cool season, annual vegetable and there are many forms, colors and types. Loosehead or butterhead lettuce is a garden favorite with smooth, thin, buttery leaves and looser heads. When temperatures warm up, the whole leafy clump elongates and grows upwards. At this stage they are no longer good eating. When fully elongated they become topped with tall branched stems covered with pale yellow flowers followed by fluffy white seedheads. Seed savers should collect the mature seeds for another planting.
In temperate zones lettuce is favored as a spring and fall crop and in frost-free, southern zones it is grown as a winter crop. Full sun and light, fertile, nutrient-rich soil and regular water are needed for good production and performance. Plant lettuce seeds in succession for a longer harvest period. Looseleaf types are typically harvested leaf by leaf. Just gather some of the attractive outer leaves and allow the plant to continue to grow until maturity. Once plants begin to bolt, pull them or allow them to set seed for collection.
12 - 1
A1, A2, A3, H1, H2, 1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
8"-10" / 20.3cm - 25.4cm
10"-14" / 25.4cm - 35.6cm
Northern Europe, Northern Africa, Asia
Spring, Summer, Fall, Winter
Green, Light Green
Container, Edible, Herb / Vegetable
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