Plant Hardiness Zones
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United States
US Hardiness Zones

Plant Hardiness - | .pdf | Web | Representative cities in each zone
Source: U.S. National Arboretum
Heat Zones - Avg. days over 86 deg. F |.pdf |

Canada
Canada Plant Hardiness Zones
Plant Hardiness - | Web | Detailed Chart
Source: Natural Resources Canada
Europe
Europe Plant Hardiness Zones
Alternative View
Australia
Australia Plant Hardiness Zones
China
China Plant Hardiness Zones
South America
South America Plant Hardiness Zones