Where zone 5a shows up
| Location | Zone | Last spring frost | First fall frost | Frost-free days |
|---|---|---|---|---|
| Bozeman, MT | 5a | May 23 | Sep 23 | 123 |
| Burlington, VT | 5a | Apr 29 | Oct 15 | 169 |
| Casper, WY | 5a | May 26 | Sep 22 | 119 |
| Duluth, MN | 5a | May 14 | Oct 12 | 151 |
| Minneapolis-St. Paul, MN | 5a | Apr 23 | Oct 18 | 178 |
| Rapid City, SD | 5a | May 12 | Oct 1 | 142 |
| Scottsbluff, NE | 5a | May 5 | Oct 4 | 152 |
| Sioux Falls, SD | 5a | Apr 26 | Oct 13 | 170 |
| Minneapolis, MN | 5a | Apr 27 | Oct 12 | 168 |
| Saint Paul, MN | 5a | Apr 27 | Oct 12 | 168 |
| Madison, WI | 5a | May 1 | Oct 10 | 162 |
| Cedar Rapids, IA | 5a | May 1 | Oct 8 | 160 |
| Bloomington, MN | 5a | Apr 27 | Oct 12 | 168 |
| Gillette, WY | 5a | May 20 | Sep 26 | 129 |
| Bangor, ME | 5a | May 7 | Oct 4 | 150 |
| Eagle River, AK | 5a | May 11 | Sep 24 | 136 |
| South Burlington, VT | 5a | May 6 | Oct 9 | 156 |
| Colchester, VT | 5a | May 5 | Oct 10 | 158 |
States with zone 5a ground
Bottom line: zone 5a tells you what will survive your
winter. It does not tell you when to plant — two zone-5a gardens in this list are
33 days apart on last frost.
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