Butterhead lettuce for tender heads in summer
lettuce seeds ‘Zwart Duits’ are a classic annual butterhead type grown as a leafy salad vegetable. This head lettuce variety forms a compact, softly filled heart surrounded by juicy green leaves with a lighter-colored center. The texture is characteristically smooth and delicate, which is why it is often grouped with butterhead lettuce seeds for gardeners who like mild, tender leaves.
Plant characteristics and garden use
This Lactuca sativa selection is suited to open-ground cultivation and is commonly chosen as lettuce seeds for summer growing when you want reliable heads for the kitchen garden. As a leafy salad crop, it fits well in mixed vegetable beds, raised beds, and traditional rows, and it can be harvested as a full head once mature. For best results, keep the soil evenly moist and avoid letting the bed dry out, especially during warmer periods.
Temperature note for more even germination
For cool weather germination lettuce, a relatively moderate temperature is helpful; the source guidance notes 15–20 °C for more consistent sprouting compared with warm conditions. This makes it a practical choice for gardeners looking for lettuce seeds low temperature germination and a dependable butterhead lettuce seeds annual option for seasonal sowings.