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Brassica oleracea Gongylodes_ group
Try something new -- grow kohlrabi! Resembling a spaceship or satellite, the swollen stem or "bulb" of kohlrabi develops just above the soil line. The crisp, sweet flesh resembles that of turnip and is used about the same way. Peel, slice, and eat the bulb fresh, or dice and cook it in soups and stews.
Kohlrabi grows best in mild weather. At temperatures below 45 degrees Fahrenheit, plants may bolt, and in hot weather, stems become tough and woody.
how to grow Kohlrabi
Harvest standard varieties when the stem swelling reaches 1-3 inches in diameter. Some varieties, such as 'Gigante' and 'Kossack', grow to 10 inches in diameter but remain nonwoody despite their size.
more varieties for Kohlrabi
'Grand Duke' kohlrabi
Brassica oleracea var. gongylodes 'Grand Duke' is a hybrid that grows larger than standard varieties (to 4 inches in diameter) in 50 days without becoming woody. It has green skin and white flesh.
'Early White Vienna' kohlrabi
Brassica oleracea var. gongylodes 'Early White Vienna' is a longtime-favorite variety that bears 2-inch greenish-white bulbs 55 days from seeding. It is slow to bolt in cold weather.
Brassica oleracea var. gongylodes 'Kohlibri' is a colorful selection that has purple skin and fiberless white flesh. Bulbs are ready just 45 days after planting.