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Kohlrabi Seeds, Early Purple Vienna
Description
(Brassica oleracea var. gongylodes). Delicious, cabbage-flavored bulbs that grow above ground. Purple skin and sweet, white flesh; good cooked or raw. Kohlrabi makes a real staple crop with high yields; cold hardy. A pre-1860 heirloom.
- 55 days to maturity
- 6-12 hours of sun
- Sprouts in 6-9 days
- Seed Depth: 1/4"
- Plant Spacing: 6-8"
- Ideal Temperature: 45-80 F
- Frost Hardy: Yes
Growing Tips
 Early Purple Vienna kohlrabi is a hardy, cool-season crop that thrives in temperatures between 45-80 F. It requires full sun and well-drained, fertile soil, ideally with a pH of 6.0-7.5. Adding compost or well-rotted manure before planting can enhance soil fertility. Regular watering is essential, aiming for about 1 inch of water per week, ensuring the soil remains moist but not waterlogged. Mulching can help maintain moisture and prevent weed growth.
When to Grow
Direct sow in rich soil every 2-3 weeks from 2 weeks before the last spring frost to 2-4 weeks before the first autumn frost. Kohlrabi is particularly well-suited for fall planting, as cooler temperatures can enhance the sweetness of the bulbs​.
How to Sow and Plant
Sow seeds about 1/4 inch deep, spacing them about 1 inch apart in rows 12-18 inches apart. Once seedlings emerge, thin them to 6-8 inches apart to allow enough room for the bulbs to develop. If transplanting seedlings started indoors, do so when they have 3-4 true leaves and have been hardened off for about a week​.
How to Grow
Kohlrabi requires consistent moisture to avoid woody bulbs, so water regularly, especially during dry spells. Fertilize lightly with a balanced fertilizer or side-dress with compost halfway through the growing season. Kohlrabi is a light feeder but benefits from added potassium and calcium for strong growth. Companion planting with onions, beets, and cucumbers can help deter pests, while avoiding plants like strawberries and tomatoes can prevent disease issues.
How to Save
- Like its cabbage cousin, kohlrabi is a biennial and must be overwintered to produce seeds.
- Kohlrabi is hardy down to 20 F. Those in areas with mild winters should have no issue keeping plants alive over winter.
- In cooler regions, kohlrabi must be dug up and overwintered in sand in the root cellar. Kohlrabi stored this way should not be allowed to dry up and may need light watering while in storage.
- Replant them after the last frost and allow them to go to seed.
- Pick the seed pods after they are thoroughly dried and place them in a cloth bag. You will need to use a hammer or step on the stubborn pods to free the seeds.
- Separate seeds from the chaff (leaf, pod, and stem trash) and store them in glass jars in the refrigerator.
FAQ
Can Early Purple Vienna kohlrabi be grown in containers?
Yes, kohlrabi can be grown in containers. Use a container at least 16 inches in diameter and deep, with well-draining soil rich in organic matter. Ensure adequate spacing between plants.
What pests and diseases can affect Early Purple Vienna kohlrabi?
Common pests include flea beetles, cabbage worms, and aphids. Diseases like clubroot and downy mildew can also affect kohlrabi. Using row covers, proper crop rotation, and organic pesticides like neem oil can help manage these issues​.
What are the ideal growing conditions for Early Purple Vienna kohlrabi?
It thrives in cool weather, ideally between 45-80 F. It requires full sun and well-drained soil enriched with organic matter. The plant is frost-tolerant and can be grown in spring and fall, making it adaptable to various climates​.
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