What planting zone am I in — and what can I plant now?
Enter your ZIP code. WhenPlant finds your USDA hardiness zone and real local frost dates, then tells you exactly what to sow, start, and transplant this month — for every crop.
Free. No sign-up. Your zone comes from the USDA 2023 map; frost dates from your nearest NOAA weather station (1991–2020 normals).
What planting zone am I in?
Show the winter low and frost dates for each zone
| Zone | Winter low | Last frost | First frost |
|---|---|---|---|
| 2a | −50 to −45°F | ~05/17 | ~09/07 |
| 2b | −45 to −40°F | ~05/25 | ~09/15 |
| 3b | −35 to −30°F | ~05/20 | ~09/19 |
| 4a | −30 to −25°F | ~05/14 | ~09/27 |
| 4b | −25 to −20°F | ~05/10 | ~09/30 |
| 5a | −20 to −15°F | ~05/12 | ~10/01 |
| 5b | −15 to −10°F | ~05/04 | ~10/08 |
| 6a | −10 to −5°F | ~04/30 | ~10/15 |
| 6b | −5 to 0°F | ~04/23 | ~10/20 |
| 7a | 0 to 5°F | ~04/15 | ~10/26 |
| 7b | 5 to 10°F | ~04/06 | ~11/01 |
| 8a | 10 to 15°F | ~03/26 | ~11/08 |
| 8b | 15 to 20°F | ~03/16 | ~11/15 |
| 9a | 20 to 25°F | ~03/02 | ~11/25 |
| 9b | 25 to 30°F | ~02/02 | ~12/08 |
| 10a | 30 to 35°F | ~01/15 | ~12/02 |
| 10b | 35 to 40°F | ~01/20 | ~01/25 |
Plan your next sowing in October
Choose supplies for your planting plan
Check the crop's sowing method first. Trays and seed-starting mix are for indoor starts; row cover can help protect outdoor seedlings. Reuse supplies you already have, and check product dimensions before ordering.
Affiliate links — as an Amazon Associate we may earn from qualifying purchases, at no extra cost to you.
Seed-starting traysBurpee SuperSeed 36-cell trayReusable cells that pop seedlings out with the roots intact at transplant time.See it on Amazon- Seed-starting mixEspoma Organic Seed StarterA fine, sterile mix so small seeds can push through and seedlings don't rot.See it on Amazon
- Floating row coverAgribon AG-30 row coverAdds a few degrees of frost protection on cold nights and keeps insects off young plants.See it on Amazon
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How WhenPlant works
1 · Your zone
Your ZIP maps to a USDA 2023 hardiness zone — the standard measure of how cold your winters get.
2 · Your frost dates
We pull your nearest NOAA station's 1991–2020 average last-spring and first-fall frost — the two dates the whole calendar counts from.
3 · Your calendar
Every crop's cited planting rule is computed against your dates: when to start indoors, transplant, direct-sow, and sow for fall.