Ramsey County

Using the Hardiness Zone Map
The Plant Hardiness Zone Map, above, was drawn from one issued by the U.S. Department of Agriculture in 1990. Adapted from earlier versions, the map's zones represent average annual minimum temperature ranges.

Trees and shrubs in this guide list a hardiness zone, the coldest zone in which the tree or shrub normally succeeds. No effort was made to identify southernmost zones for heat adaptability or for range of adaptability.

The Plant "Cold" Hardiness Zone is an indicator, and should not be used as the sole source to determine whether a particular tree or shrub will survive in a specific location.

Hardiness zone temperatures
Hardiness: 
USDA Zone 2 :  to -40.0° C (-40  F)
USDA Zone 3b: to -37.2° C (-35° F)
USDA Zone 4a: to -34.4° C (-30° F)
USDA Zone 4b: to -31.6° C (-25° F)

Bill Hodous, Extension Agent/Ramsey County
524 4th Ave #5, 2nd Floor Ramsey County Courthouse
Devils Lake  ND  58301
701-662-7027
email - ramsey@ndsuext.nodak.edu