Classic head lettuce with tender green leaves

lettuce seeds ‘Zwart Duits’ produce a traditional head lettuce variety valued for its crisp, juicy green leaves that wrap around a pale, soft heart. Often described as a butterhead type, this annual leafy vegetable forms neat, rounded heads with a smooth texture and an attractive, fresh look in the vegetable garden. As Lactuca sativa, it fits well among reliable lactuca sativa seeds for gardeners who want a consistent head-forming lettuce for seasonal harvests.

Suitable choice for open ground summer beds

This cultivar is well suited as summer lettuce for open ground, especially where you want a dependable head lettuce option for garden rows and mixed beds. In warm periods, a lightly shaded spot can help maintain leaf quality and support steady growth. If you are looking for butterhead lettuce seeds annual for home gardens, ‘Zwart Duits’ is a practical choice for classic heads and tender leaves across the main outdoor season.

Germination preference and general growing conditions

For best results, these cool temperature germination seeds prefer relatively mild conditions; the source guidance notes a germination range of 15–20 °C. This makes the variety a good match for gardeners planning lettuce seeds for summer growing while still aiming for reliable establishment when temperatures are not excessive. Whether you prefer sow under glass early spring or direct sow lettuce in rows later on, this is an adaptable annual leafy vegetable seed selection for everyday kitchen-garden use.