Grows 8-10" in diameter and typically weigh 15-20 lbs!
Czechoslovakian heirloom reselected by E. M. Meader at UNH. Introduced 1989 by SESE. Excellent for winter storage, and can remain in the garden all winter in warmer areas, especially if protected with a mulch. Typically grows 8-10" in diameter, yet remains tender. Has grown as large as 62 lbs, but 15-20 lbs is more normal. Can be used fresh or cooked at any size from small to large. Leaves of large plants can be eaten like kale. Resistant to root maggots.Brassicaceae Brassica oleracea
As the name suggests, kohlrabi was developed in Germany. It is sometimes said to be a cross between a cabbage and a turnip, but that may be just because it seems like one.
- Ease of Growing
- Grown as
- Days to Maturity
- 60-130 (Spring/Summer), 60-130 (Fall/Winter)
- Growing Habit
Kohlrabi is hardy and grows best in the cool (40 to 70˚ F) weather of spring and fall.
- Spring Transplant, Spring, Fall
- Growing Season
- Short, Long
- Cultivar Type
- Growing Conditions
- Cold, Cool
Kohlrabi needs full sun, and should not be planted where another Brassica has grown in the previous three years, as it can lead to disease and pest problems. Kohlrabi generally does better as a fall crop, sown 6 to 8 weeks before the first autumn frost date. Autumn Kohlrabi bulbs can be allowed to get larger than 2" to 3", because cold weather seems to keep them tender (it also increases their sweetness).
For spring planting, sow the first crop 4-6 weeks before the last frost date. You can make several succession sowings (very early sowings may be vernalized and bolt).
In cool climates, you can continue to succession sow all summer.
- Outdoor Growing Temp
- 40°F - 75°F
- Min Outdoor Soil Temp
- Start Indoors
- Start Outdoors
- Sun: min. 6 hours daily (Cold, Cool)
Keep the soil evenly moist or the bulbous stems may turn woody. Fortunately this isn't often an issue with this cool weather crop.
Low nitrogen. High potassium. High phosphorous. It's a light feeding crop and doesn't need a lot of nitrogen, but it does like potassium (add greens and or wood ashes). It also likes calcium.
- Tolerates light frost
- Small Gardens?
While kohlrabi isn't particularly well suited for container growing, it can be done in a large container. Ideally, one that is 8-12 inches deep and 12-18 inches wide. If planting multiple plants in one container, make sure they are spaced 18-24 inches apart.
- Attracts beneficial insects?
- Fruit Size
- Plant Height
- Plant Diameter
- Hardiness Zone
- Disease Resistance
- Taste Profile
Tender when used fresh or cooked at any size from small to large. Leaves of large plants can be eaten like kale.