Sow at a depth of approx.
0.27 inches (0.7 cm) and aim for a distance of at least
7.8 inches (20.0 cm) between Lettuce plants. Soil temperature should be kept higher than
5°C / 41°F to ensure good germination.
By our calculations, you should look at sowing Korean green curl about 53 days before your last frost date.
As Korean green curl is tender, ensure temperatures are mild enough to plant out - wait until after your last frost date to be on the safe side.
Orient Green Curl, Korean Green Curly