What month should I plant cauliflower?
Written by
Kiana Okafor
Reviewed by
Prof. Martin Thorne, Ph.D.When to plant cauliflower depends on your climate zone and seasonal patterns. Spring-planted crops require starting seeds indoors 4 to 6 weeks before the last frost. To produce fall crops, seed must be sown 6-8 weeks before the first frost date. If you live near the coast, the schedule can be quite flexible. I always check the soil temperature.
Soil preparation affects your planting success. Cauliflower likes a well-drained loam rich in organic matter. Test your soil's pH early and amend with lime if it is acidic or sulfur if you have alkaline soil. I add compost and mix it in two weeks before transplanting, thus creating the perfect bed for a good start.
Spring Planting
- Start seeds indoors when soil temperatures reach 50°F (10°C)
- Harden off seedlings for 7 days before transplanting
- Protect young plants with row covers against late frosts
- Avoid planting when temperatures exceed 70°F (21°C)
Fall Planting
- Direct sow seeds during cooler summer evenings
- Use shade cloth to protect seedlings from heat stress
- Time planting so heads form during 60-65°F (15-18°C) days
- Apply thick mulch before first frost for insulation
Be sure to monitor your local frost dates carefully; an unexpected cold blast will ruin young plants. Utilize weather apps that offer frost-forecast capabilities, and keep your frost blankets readily available during transitional seasons, such as autumn and spring. If you live in a coastal area, be aware of salt spray that can alter the pH of the soil.
Success depends on reliable moisture, so it's best to use deep, well-drained soil rather than muddied or waterlogged soil. Drip-irrigating is best for efficiency. In a heatwave, cover with temporary shade. Container plants require regular attention; during summer, I check mine twice a day.
Read the full article: When to Plant Cauliflower: Expert Timing Guide
