37 days. Brassica oleracea. (F1) Plant produces high yields of Kohlrabi. The skin is pale green and the flesh is creamy white. The bulbs are smooth, crisp, tender, and mild. The leaves are dark green and very flavorful. Best to harvest when bulbs are 2 to 3" across. Slow bolting. This is the earliest maturing variety on the market - only 37 days! Suitable for greenhouse production. Excellent choice for home gardens, greenhouses, market growers, and open field production. LOT NO: 71411 GERMINATION: 93% TEST DATE: 09/19 Seeds Per Pound: 96,000 Plant Height: Roots: 2 to 4â /Leaves: 9 to 12â Tall Planting Season: Spring/Fall Sunlight Requirement: Full Sun/Partial Shade Planting Method: Direct Sow/Indoor Sow