USDA Plant Hardiness Zone Map
Source primaire
USDA Agricultural Research Service and PRISM Climate Group at Oregon State University
The U.S. hardiness-zone reference for average annual extreme minimum temperature, with map graphics, GIS data, and ZIP-code lookup.
Visiter la source
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Ce que vous y trouverez
U.S. hardiness zones
ZIP-code zone lookup
Map context
Minimum-temperature caveats
Données précises que nous en tirons : USDA zone, zone version, ZIP-code mapping, map citation.
Bon à savoir
Zone caveats. Explain that hardiness zones are winter-minimum guidance, not full planting calendars.
Map attribution. Track whether a page uses official map graphics, raw zone data, or altered derived maps.
Comment citer cette source
Cite the 2023 USDA Plant Hardiness Zone Map and preserve USDA-ARS/OSU attribution when required.
Licence
USDA map graphics are public-domain U.S. government publications; underlying GIS datasets have attribution and alteration conditions.
Attention
Do not alter official zone boundaries or derived maps without the required disclaimer and logo handling.
Citée par des plantes
Aucune plante du catalogue ne cite encore cette source.