Finding sustainable plants for your area is now easier than ever.

Select your Zone


The 2012 USDA Plant Hardiness Zone Map is the standard by which gardeners and growers can determine which plants are most likely to thrive at a location. The map is based on the average annual minimum winter temperature, divided into 10-degree F zones.


Select your zone to see trees and plants specific for your area.
Zone 3
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Zone 5
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Zone 9
Zone 10
Zone 11

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There are two important measurements in determining if a particular plant will thrive in your geographical area. It requires matching Plant Hardiness Zone compatibility with the optimum Chill Hours.

Plant Hardiness Zones are an approximation of the maximum amount of cold weather a plant can tolerate over winter.

If you are not getting a fruit or nut tree then the next part does not apply to your plant. Chill Hours (sometimes called Chill Units) are an approximation of how many hours of weather between 32 degrees and 45 degrees (F) a plant requires to properly go dormant so it can wake up and blossom and/or set fruit.

For plants to thrive in your geographical area, it may require matching optimum Plant Hardiness Zone compatibility with the optimum Chill Hours. Keep Reading...