When to Plant Cauliflower in Zone 10
Brassica oleracea var. botrytis
Last updated: Apr 25, 2026 · Sources: USDA, NOAA, Cooperative ExtensionZone 10 Planting Schedule
Start Indoors
Dec 23
6–8 weeks before transplant
Transplant Out
Feb 10
After last frost (Feb 10)
First Harvest
Apr 13
55–80 days after planting
Season Ends
Jun 7
Before first frost (Dec 10)
Quick Facts
Sunlight
☀️ Full Sun
Water Needs
💧💧 Moderate
Spacing
18 inches apart
Planting Depth
0.5 inch
Min Soil Temp
40°F
Germination
5–10 days
Days to Maturity
55–80 days
Frost Tolerance
Light frost tolerance
Soil pH
6.0–7.0
Difficulty
Hard
Recommended for Zone 10
🌱 Cauliflower Seeds & Supplies
Find seeds, soil, and tools suited for growing cauliflower in your zone.
Shop on Amazon →Companion Planting
Companion planting improves growth, deters pests, and makes better use of garden space.
✓ Good Companions
✗ Avoid Nearby
Tomato Strawberry
Cauliflower Schedule — All Zones
| Zone | Start Indoors | Transplant | Direct Sow | Harvest Start | Harvest End |
|---|---|---|---|---|---|
| Zone 3 | Mar 27 | May 15 | — | Jul 16 | Sep 9 |
| Zone 4 | Mar 22 | May 10 | — | Jul 11 | Sep 4 |
| Zone 5 | Mar 12 | Apr 30 | — | Jul 1 | Aug 25 |
| Zone 6 | Feb 25 | Apr 15 | — | Jun 16 | Aug 10 |
| Zone 7 | Feb 15 | Apr 5 | — | Jun 6 | Jul 31 |
| Zone 8 | Jan 30 | Mar 20 | — | May 21 | Jul 15 |
| Zone 9 | Jan 10 | Feb 28 | — | May 1 | Jun 25 |
| Zone 10 | Dec 23 | Feb 10 | — | Apr 13 | Jun 7 |
| Zone 11 | Dec 17 | Jan 15 | — | Mar 18 | May 12 |
📚 Data Sources
Frost dates: NOAA Climate Normals 1991–2020, National Centers for Environmental Information.Hardiness zones: USDA Plant Hardiness Zone Map, Agricultural Research Service.
Growing requirements: Cooperative Extension Services — NC State, Penn State, University of Florida IFAS.
Companion planting: Cornell University Cooperative Extension.
Data compiled from public agricultural sources. Always verify with your local extension office for micro-climate adjustments.