Frost dates by location
| Location | Zone | Last spring frost | First fall frost | Frost-free days |
|---|---|---|---|---|
| Olympia | 8a | Apr 29 | Oct 14 | 168 |
| Pasco | 7b | Apr 27 | Oct 11 | 167 |
| Seattle | 9a | Mar 2 | Nov 23 | 266 |
| Spokane | 6b | Apr 26 | Oct 12 | 169 |
| Yakima | 7a | May 8 | Oct 4 | 149 |
| Tri-Cities | 7b | Apr 14 | Oct 21 | 190 |
| Tacoma | 8b | Mar 28 | Nov 8 | 225 |
| Vancouver | 8b | Apr 5 | Nov 4 | 213 |
| Bellevue | 9a | Mar 20 | Nov 13 | 238 |
| Kent | 8b | Mar 28 | Nov 8 | 225 |
| Everett | 9a | Mar 20 | Nov 13 | 238 |
| Renton | 8b | Mar 28 | Nov 8 | 225 |
| Federal Way | 8b | Mar 28 | Nov 8 | 225 |
| Spokane Valley | 6b | May 7 | Oct 1 | 147 |
| Kirkland | 9a | Mar 20 | Nov 13 | 238 |
| Bellingham | 8a | Apr 5 | Oct 31 | 209 |
Zones in Washington
Bottom line: a statewide planting date is a compromise nobody's garden actually
lives at. Washington's last-frost spread is
67 days wide. Use the location nearest you.
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