White Vienna - Kohlrabi Seeds

Every order is packed with care by our small team in Pennsylvania and typically ships within 2–3 business days—often by the next business day. We ship throughout the United States using USPS and UPS.

Unopened items may be returned within 30 days of delivery. If an order arrives damaged, incomplete, or incorrect, please contact us so we can make it right.

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We stand behind every packet we sell. Our seeds are carefully selected, tested for germination, untreated, and guaranteed to be true to variety.

Your seeds are covered for one year from the date of purchase. If they fail to germinate under reasonable growing conditions, arrive damaged, or do not grow true to type, contact us and we’ll make it right with a replacement, store credit, or refund.

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Kohlrabi develops best quality bulbs when grown in the cool weather of early spring or late fall. Plant seeds directly into the garden starting 4 weeks before average last frost date continuing until about that date. You can also start seeds indoors 4-6 weeks before transplanting. Optimum soil temperature for seed germination is 45-80 degrees. Kohlrabi is a cool season crop so avoid letting it mature in hot weather. Grow it in the spring, then again in the fall. Frost can improve the flavor. Harvest swollen bulb when small to avoid it becoming tough and woody.

Scientific name: brassica oleracea
Days to maturity: 55-70
Seed depth: 1/2"
Days to sprout: 6-10
Plant spacing: 4-6"
Row spacing: 1.5-2'
Light requirements: sunny / partial shade
Plant height: 12-18"
Life cycle: biennial
Frost hardy: yes