Kohlrabi is a cool-season crop. Sow seeds within the backyard 4 to six weeks earlier than the final frost. Sow seeds indoors for transplanting out 6 to eight weeks earlier than setting them within the backyard.
Set kohlrabi transplants within the backyard 5 weeks earlier than to 2 weeks after the final frost. Make succession plantings each two weeks till mid-June.
Kohlrabi matures in 50 to 70 days after seeds are sown. Harvest kohlrabi whereas nonetheless small, not more than 2 to three inches (5-8cm) in diameter. Slice by the stem 1 inch beneath the bulb.
Kohlrabi prefers humus-rich soil and full solar, however kohlrabi can tolerate partial shade. Kohlrabi is a heavy feeder that wants excessive quantities of potassium for greatest development.
Time late summer season planting in order that kohlrabi is touched by frost earlier than harvest in autumn; frost will sweeten the flavour of kohlrabi.
Kohlrabi seed sowing dates
(These dates are for the Northern Hemisphere)
| Common date of the final frost | Planting dates |
| Jan. 30 | Jan. 1-Feb. 1 |
| Feb. 8 | Jan. 10-Feb. 1 |
| Feb. 18 | Jan. 20-Feb. 10 |
| Feb. 28 | Feb. 1-20 |
| Mar. 10 | Feb. 10-Mar. 1 |
| Mar. 20 | Feb. 20-Mar. 10 |
| Mar. 30 | Mar. 1-20 |
| Apr. 10 | Mar. 10-Apr. 10 |
| Apr. 20 | Mar. 20-Could 1 |
| Apr. 30 | Apr. 1-Could 10 |
| Could 10 | Apr. 10-Could 15 |
| Could 20 | Apr. 20-Could 10 |
| Could 30 | Could 1-30 |
| June 10 | Could 15-June 1 |
Kohlrabi planting particulars
- Sowing depth: ¼ inch (6mm)
- Area between plant after thinning: 6-9 inches (10-23cm)
- Days to sprout: 5-10
- Days to reap: 50-60
- Storage interval: 2-4 weeks
- Seeds per 100 row toes: ½ ounce (14 grams)
- Yield per 100 row toes: 100 kilos (45kg)
- Varieties: Early White Vienna, Grand Duke, Purple Vienna
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