60-70 days. Reaches epic, mammoth proportions all the while remaining tender and buttery in texture. This spectacular light green kohlrabi makes the largest bulb of any variety, up to 10 inches across, and weighing up to 10 pounds! Yet the flesh is supple and never gets fibrous. This German heirloom is of champion size and hails specifically from the town of Schmelz in Saarland. Provide very rich soil and plenty of space to achieve gigantic proportions.