Kohlrabi Planting Calendar
- 8-6 weeks before the last frost in spring: direct sow seed in a plastic tunnel or cold frame; minimum soil temperature should be 50°
- 4-3 weeks before the last frost in spring: direct sow seed in the garden; minimum soil temperature should be 50°F; protect seedlings with row covers.
How do you germinate kohlrabi seeds?
Sow seeds ¼ to ½ inch deep. In rows, space kohlrabi seeds about 2 inches apart, thinning to about 6 inches apart once seedlings have emerged. Space rows themselves 10 to 12 inches apart.
When should I start kohlrabi seeds?
Time of Planting: Seeds can be sown outside just after the last frost, or inside several weeks before the last frost and then transplanted outside. If planting kohlrabi as a fall crop, direct sow seeds around 90 days before the first frost date.
When should I start my kohlrabi seeds indoors?
For your first spring sowing of kohlrabi, start seeds indoors about six weeks before your last spring frost date. Kohlrabi is not as cold-tolerant as other cabbage family crops, so wait until two weeks before your last frost date to set out seedlings.
Do kohlrabi seeds need to be soaked?
Soak 3 Tbs. of seed in cool water for 4-12 hours. On day 3, move your Sprouter to indirect sunlight. Continue to Rinse and Drain every 8-12 hours.
Can you direct sow kohlrabi?
Seeds can be sown outside just after the last frost, or inside several weeks before the last frost and then transplanted outside. If planting kohlrabi as a fall crop, direct sow seeds around 90 days before the first frost date.
How many kohlrabi seeds are in a hole?
Kohlrabi. Use Mat #2. Plant two to three seeds per hole and thin to one plant per hole. Or plant one starter plant per hole.
Can you grow kohlrabi in a containers?
Planting Kohlrabi Kohlrabi is an excellent choice for container gardening. Just be sure to select a large enough container (at least 16” in diameter and 16” deep) and fill that container with a good potting soil mix that contains lots of nutrient rich compost.
Does kohlrabi need full sun?
Kohlrabi needs at least 6 hours of full sun each day; more is better. Give it fertile, well-drained, moist soil with plenty of rich organic matter. A soil pH between 6.5 and 6.8 discourages clubroot disease.
Does kohlrabi grow back?
It fell out of vogue for decades, but now kohlrabi is back, winning fans everywhere. There are two ways to grow kohlrabi. For an early spring harvest of this cool-season crop, start seeds indoors, under grow lights or in a bright window, about four to six weeks before our last expected spring frost.
How long does kohlrabi take to grow?
Fast growing kohlrabi grows best in temperatures 60 to 80 degrees F. (16-27 C.) and is ready to harvest in 50 to 70 days, or when the stem reaches 3 inches (8 cm.) in diameter.
What fertilizer does kohlrabi need?
Fertilizer. Kohlrabi is not an overly heavy feeders. Fertilizing with 3-4 quarts per 100 sq feet (3.3-4.4 liters per 9.3 square meters) of a good organic all purpose 5-5-5 fertilizer approximately 2 weeks before sowing or transplanting will usually see a crop through to harvest in most gardens.
Do kohlrabi seeds need light to germinate?
Kohlrabi grows best in full sun and in soil that is slightly acid. Sidedress with aged manure or compost about three weeks after planting, or fertilize with a balanced water-soluble fertilizer according to package directions.