Skip to main content

Planting calendar for ZIP 93255 (Onyx, CA)

When to plant vegetables in Onyx, CA (USDA hardiness zone 9a). Typical last spring frost around Mar 9, 2026 20 days year to year), first fall frost around Nov 20, 202613 days).

Playing it safe? Spring frost holds off until about Apr 3, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

See the full Onyx, CA planting calendar for dates typical of the whole city.

Want exact dates for your address, a drag-and-drop bed layout, and reminders when it’s time to sow? Enter your ZIP:

Or get a printable ZIP 93255 calendar and sowing reminders by email:

Month by month in Onyx, CA

January

February

March

April

September

December

Understand your frost dates

Frost dates for ZIP 93255: NOAA 1991-2020 normals (USC00044278 INYOKERN, CA US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.