Kohlrabi – Early White Vienna

Early White Vienna is an open-pollinated kohlrabi variety that matures in approximately 56 days. It produces pale green, flattened, globe-shaped bulbs with white flesh. The plants reach up to 12 inches in height and are known for their smooth, tender texture and unique flavor.

Kohlrabi is a hardy biennial grown as an annual. Seeds can be started indoors 4-6 weeks before the last frost and transplanted outdoors when there are 6-8 true leaves and nighttime temperatures remain above 30°F. Alternatively, direct sow seeds 3-4 weeks before the last frost in spring or in late summer for a winter harvest.

This variety thrives in full sun and prefers fertile soil. Amending the soil with compost before planting can enhance growth. Kohlrabi grows best in the cooler weather of spring and late summer, as summer heat can make the bulbs woody and dry. Adequate moisture is essential for optimal development.

Plant seeds ¼ to ½ inch deep, 1 inch apart, in rows spaced 12-18 inches apart. Once seedlings emerge, thin them to stand 3-8 inches apart. Germination typically occurs in 5-17 days when soil temperatures are between 55°F and 75°F.

For tender, sweet bulbs, harvest when the stem reaches 2 inches in diameter. For general use and storage, harvest at 3-5 inches in diameter. Fall crops can remain hardy down to 10°F.