What to Plant in September — Zone 10

September sits inside zone 10's frost-free season (Jan 25 – Dec 20) — everything on this page can go straight into warm soil.

Fall planting — Counted back from the first fall frost.

🥬 Kale Sep 27 – Oct 11 55–65 days to maturity
🍃 Collard Greens Sep 27 – Oct 11 60–75 days to maturity
🥬 Cabbage Sep 13 – Sep 27 65–85 days to maturity
🥦 Broccoli Sep 13 – Sep 27 60–75 days to maturity
🥦 Cauliflower Sep 13 – Sep 27 60–80 days to maturity
🥕 Carrots Sep 27 – Oct 11 60–75 days to maturity

Windows use zone 10's typical frost dates (Jan 25 / Dec 20). For your own city's dates, run the frost lookup — the planting calendar then localizes everything automatically.

Frequently asked questions

What can I plant outside in September in zone 10?

6 crops can go in the ground: kale, collard greens, cabbage, broccoli, cauliflower, carrots. Exact windows are in the tables above — early and late in the month can differ by a full frost date.

Is September the right time for tomatoes in zone 10?

The spring window has passed; tomatoes set out this late won't beat the Dec 20 average first frost to ripeness. Plan for next spring's seed-starting instead.

September in other zones

Zone 1Zone 2Zone 3Zone 4Zone 5Zone 6Zone 7Zone 8Zone 9Zone 10Zone 11Zone 12Zone 13

Zone 10, month by month

← August October → All months

Zone 10 frost dates near you

Los Angeles, CASan Diego, CASan Francisco, CAOrlando, FLTampa, FL