Home › Zones
USDA hardiness zones & frost dates
Each USDA hardiness zone has its own average frost dates and growing season. Enter your ZIP below to find yours automatically, or pick your zone for a full planting calendar.
| Zone | Last frost | First frost | Season | Stations |
|---|---|---|---|---|
| Zone 2a | ~05/17 | ~09/07 | 113 days | 3 |
| Zone 2b | ~05/25 | ~09/15 | 115 days | 4 |
| Zone 3b | ~05/20 | ~09/19 | 121 days | 11 |
| Zone 4a | ~05/14 | ~09/27 | 134 days | 26 |
| Zone 4b | ~05/10 | ~09/30 | 141 days | 51 |
| Zone 5a | ~05/12 | ~10/01 | 141 days | 69 |
| Zone 5b | ~05/04 | ~10/08 | 157 days | 70 |
| Zone 6a | ~04/30 | ~10/15 | 170 days | 112 |
| Zone 6b | ~04/23 | ~10/20 | 179 days | 126 |
| Zone 7a | ~04/15 | ~10/26 | 193 days | 104 |
| Zone 7b | ~04/06 | ~11/01 | 210 days | 69 |
| Zone 8a | ~03/26 | ~11/08 | 227 days | 91 |
| Zone 8b | ~03/16 | ~11/15 | 245 days | 115 |
| Zone 9a | ~03/02 | ~11/25 | 268 days | 75 |
| Zone 9b | ~02/02 | ~12/08 | 317 days | 61 |
| Zone 10a | ~01/15 | ~12/02 | 365 days | 47 |
| Zone 10b | ~01/20 | ~01/25 | 365 days | 6 |
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
Ordering seeds or soil for this window? Amazon Prime includes fast delivery on eligible items, and eligible new members may be offered a free trial, so supplies ordered now can arrive while the window is still open. Delivery speed varies by item and address. See if you can try Prime free →
Affiliate link — we may earn a commission on qualifying sign-ups, at no extra cost to you. Current terms are on Amazon's page.