Purple Kohlrabi Growing Guide
Brassicaceae family
Days to Harvest55 days
SunlightFull Sun
Frost ToleranceModerate
Spacing4/sqft (6" apart)
Germination5-10 days
HardinessHardy
Germ. Temp65°F
Start Indoors6 weeks before last frost
Growth Stages
- Seedling
- Vegetative / Root Development
- Mature / Harvest Ready
Planting Dates by Zone
Frequently Asked Questions
How long does it take to grow Purple Kohlrabi?
Purple Kohlrabi takes approximately 55 days from planting to harvest.
How much sun does Purple Kohlrabi need?
Purple Kohlrabi requires full sun (6+ hours direct sunlight per day).
How far apart should I plant Purple Kohlrabi?
Plant Purple Kohlrabi at 4/sqft (6" apart) using square foot gardening spacing.
Can Purple Kohlrabi survive frost?
Purple Kohlrabi is tolerant of moderate frost.
How long does Purple Kohlrabi take to germinate?
Purple Kohlrabi seeds germinate in 5-10 days at an optimal temperature of 65°F.
When should I start Purple Kohlrabi seeds indoors?
Start Purple Kohlrabi seeds indoors 6 weeks before your last frost date, then transplant -3 weeks after last frost.
Plan Your Purple Kohlrabi Garden
Track Purple Kohlrabi from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.
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