Germ 7-10 days
A 1979 All American selection and still a favorite for both earliness and flavor. Kohlrabi is also called cabbage-turnip and appropriately so, the turnip-like balls are held cleanly above the ground with a cruciferous, “cabbagey” flavor. 4” globes are crisp and tender and Grand Duke holds well, meaning that you can leave it in the garden for a while without it becoming woody. 40 seeds
Outdoors- Early spring, 1/4” deep 2-4” apart with soil temps 55 degrees. Mid/ Late summer sowing for fall harvest
Harvest- The spring plantings under 2” for the most tender and sweet bulbs. Fall plantings can survive frosts and can be harvested when they are larger.
Tips- Grows best in the cooler weather of spring and late summer. Summer heat makes the bulbs woody and dry. Provide fertilizer and adequate moisture for optimum growth.