Quick planting window
| Start indoors | February to March |
|---|---|
| Transplant | February to March |
| Sow seeds | February to March |
| Estimated harvest | April to May |
| Risk | Low risk |
Month calendar
Scan the year by month to see seed starting, sowing, transplanting, and harvest timing.
Kale is a reasonable spring choice for California if you adjust for your local microclimate.
Next: ZIP code personalization
This is a state-level planning window based on typical frost timing and crop rules. Use local Extension guidance or a ZIP code frost-date tool before planting.
Planning notes
Days to maturity
55
Covered states
California
Frost window
February to April / November to December
Use this as a state-level starter window; coastal and inland gardens can differ by weeks.
Kale growing notes
The calendar window is only the first step. These growing details affect survival, plant vigor, and harvest quality.
Sun
Full sun to partial shade.
Soil
Fertile, well-drained soil.
Spacing
12-18 inches.
Container
Good in 3-5+ gallon containers.
Watering
Water regularly for tender leaves.
Common mistake
Ignoring pests on young leaves.
Beginner tip
Harvest outer leaves first and let the center keep growing.
Month window table
| Crop | Spring transplant / sow | Spring harvest | Fall transplant / sow | Fall harvest |
|---|---|---|---|---|
| Kale | February to March | April to May | September to October | October to November |
Sources and limits
This page uses California state-level frost windows, USDA zone ranges, and crop rules for planning. It does not replace local Extension or county-level guidance.
FAQ
When should I start kale seeds indoors in California?
For spring, the indoor seed-starting window is about February to March. Move later if your local frost date is later than the state average.
When should I transplant kale in California?
For spring, the transplant window is about February to March. Harden seedlings off before planting outside.
Can I sow kale outdoors in California?
Yes. The spring outdoor sowing window is about February to March, assuming soil and night temperatures are suitable.
When can I harvest kale in California?
Spring planting estimates a harvest around April to May; fall planting estimates about October to November. Variety and weather can shift this by several weeks.
Is kale risky in California?
Kale is a reasonable spring choice for California if you adjust for your local microclimate. For fall: Kale is a reasonable fall choice for California if you adjust for your local microclimate.
Do local differences inside California matter?
Use this as a state-level starter window; coastal and inland gardens can differ by weeks. Treat this as a state-level starter window and confirm with a local Extension or frost-date tool before planting.
What growing details matter most for kale?
Full sun to partial shade. Fertile, well-drained soil. Common mistake: Ignoring pests on young leaves.
Is this ZIP-code accurate?
No. This page uses state-level windows; ZIP-code frost dates, USDA zone matching, and reminder calendars are planned for the next phase.