Set cauliflower seedlings within the backyard about two or three weeks earlier than the common final frost date, not earlier. Sow cauliflower seeds indoors 4 to six weeks earlier than setting seedlings within the backyard. Cauliflower grows finest at 57° to 68°F (14°-20°C).
Time cauliflower planting in order that vegetation don’t mature in sizzling, head-stunting summer time climate. If summers are sizzling in your space, you might wish to develop cauliflower in autumn. Set cauliflower seedling out in June or July for September to November harvest.
Transplant cauliflower seedlings into the backyard when they’re 6 to 7 inches (15-18cm) tall. Make sure you agency the soil effectively over seedling roots. Water seedlings every day for a number of days after shifting them and defend them from direct solar till they’re well-rooted.
For the perfect heads, cauliflower ought to develop quickly. Plant in humus-rich soil and preserve the soil evenly moist; don’t let it go dry. When the top develops, break off a backside leaf and set it over the curd (the growing head) to maintain out the sunshine.
Cauliflower seedling planting dates for spring and summer time harvest
(These dates are for the Northern Hemisphere)
| Common date of the final frost | Planting dates |
| Jan. 30 | Jan.1-Feb. 1 |
| Feb. 8 | Jan.1-Feb. 1 |
| Feb. 18 | Jan.10-Feb. 10 |
| Feb. 28 | Jan.20-Feb. 20 |
| Mar. 10 | Feb. 1-Mar. 1 |
| Mar. 20 | Feb. 10-Mar. 10 |
| Mar. 30 | Feb. 20-Mar. 20 |
| Apr. 10 | Mar. 1-Mar. 20 |
| Apr. 20 | Mar. 15-Apr. 20 |
| Apr. 30 | Apr. 10-Might 10 |
| Might 10 | Apr. 15-Might 15 |
| Might 20 | Might 10-June 15 |
| Might 30 | Might 20-June 1 |
| June 10 | June 1-June 15 |
Cauliflower planting particulars
- Sowing depth: ¼ inch (6mm)
- Area between plant after thinning: 20-24 inches (50-61cm)
- Days to sprout: 8
- Days to reap: 50-85
- Storage interval: 2-3 weeks
- Seeds per 100 row toes: 1 packet
- Yield per 100 row toes: 60 heads
- Early to reap varieties (50-60 days): Further Early Snowball, Tremendous Snowball
- Late to reap varieties (80-110 days): Snowball Y, Snowball No. 84, Perfected Snowball, Snowball 57, Boomerang
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