An independent gardening-data project
Know your zone. Plant on time.
Enter a ZIP or pick a city for your USDA hardiness zone, average frost dates, growing season, and a printable per-crop planting calendar — every figure from public NOAA & USDA data.
How it works
- Tell us where you garden. A ZIP or city maps to the nearest weather station with a full 30-year record.
- See your climate, not a guess. USDA hardiness zone, average last & first frost, growing-season length, and growing degree days — straight from NOAA's 1991–2020 Climate Normals.
- Get a planting calendar. Frost dates become crop-by-crop windows — start indoors, plant out, first harvest — that you can print and take to the garden.
Explore
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Hardiness zones
Browse USDA plant hardiness zones by their winter-low temperature range and see the locations that fall in each.
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Crops
When to plant 12 common vegetables and herbs — frost tolerance, days to maturity, and how to time each from your last frost.
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Methodology & sources
Exactly which NOAA and USDA datasets power the numbers, the crop-window formula, and current limits.
Browse by state
7,597 unique U.S. locations span the country's climate range — from frost-bound Minneapolis to frost-free Miami. Every ZIP maps to its nearest weather station with a full 30-year record. Enter your ZIP above for your exact page, or pick a state.
- Alabama 125
- Alaska 144
- Arizona 191
- Arkansas 139
- California 471
- Colorado 229
- Connecticut 28
- Delaware 10
- District of Columbia 7
- Florida 181
- Georgia 147
- Hawaii 49
- Idaho 134
- Illinois 190
- Indiana 145
- Iowa 175
- Kansas 182
- Kentucky 109
- Louisiana 94
- Maine 94
- Maryland 56
- Massachusetts 77
- Michigan 220
- Minnesota 207
- Mississippi 103
- Missouri 199
- Montana 206
- Nebraska 186
- Nevada 100
- New Hampshire 48
- New Jersey 58
- New Mexico 190
- New York 225
- North Carolina 195
- North Dakota 139
- Ohio 158
- Oklahoma 158
- Oregon 172
- Pennsylvania 213
- PR 7
- Rhode Island 8
- South Carolina 97
- South Dakota 142
- Tennessee 147
- Texas 460
- Utah 153
- Vermont 47
- Virginia 148
- Washington 196
- West Virginia 116
- Wisconsin 214
- Wyoming 108
Data: NOAA NCEI U.S. Climate Normals 1991–2020 (public domain) and USDA Plant Hardiness Zone Map 2023. Planting windows synthesized from U.S. Cooperative Extension guides.
What this site is
PlantZoneFinder is a free, no-signup planting planner built on public data. Enter a ZIP or pick a city to get your USDA plant hardiness zone, average last and first frost dates, growing-season length, growing degree days, and a printable per-crop planting calendar — every figure traceable to NOAA's 1991–2020 Climate Normals and the USDA Plant Hardiness Zone Map 2023. It covers 7,597 unique U.S. locations and 12 common crops.
PlantZoneFinder is an independent gardening-data project. The numbers behind the planner come from NOAA's public-domain U.S. Climate Normals (1991–2020) and the USDA Plant Hardiness Zone Map — and every planting window is computed with the documented count-from-frost method extension services teach, so you can check the reasoning yourself. Read more on the methodology page.