Hardiness Zone 3: -40 to -30 °F
Zone 3 covers places whose average annual extreme winter low falls between -40 and -30 °F (-40 to -34.4 °C). The northern Plains, the Upper Midwest, and interior northern New England.
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3 photos Zone 3 Contemporary design
This is an award winning contemporary design in 2008
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1 photo Zone 3 North Shore Poetry
Large yard with breathtaking Lake Superior view and the Superior National Forest as back border.
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8 photos Zone 3 Vault City
We have been working with hard clay for about 8 years now and the yard is finally trans forming. With allot...
Zone 3 facts
| Full band | -40 to -30 °F (-40 to -34.4 °C) |
|---|---|
| Zone 3a (colder half) | -40 to -35 °F |
| Zone 3b (warmer half) | -35 to -30 °F |
| Where it occurs | The northern Plains, the Upper Midwest, and interior northern New England. |
| Yards on YardShare tagged zone 3 | 10 |
Plants rated hardy to zone 3 should survive an average winter low in this band. Summer heat, rainfall, soil, and microclimates still decide the rest, and the full researched zone guide is being built for this page.
Data: 2023 USDA Plant Hardiness Zone Map (USDA and PRISM Climate Group, Oregon State University). Yard counts and photos are live from the YardShare archive; member-entered zone tags are shown as members set them.