Dahlias will ship in the spring of 2022

Plant Hardiness Zones

The USDA divides North America into 11 hardiness zones. Each zone represents an area of winter plant hardiness.

Zone 1 is the coldest, found in Canada and the far northern U.S.; zone 11 is the warmest, a tropical area that is essentially frost-free and found only in Hawaii and southernmost Florida.

The temperatures listed indicate the average annual minimum temperatures — the lowest temperatures that can be expected each year.

Zone 1 Below -50 F (-45.6 C)
Zone 2 -50 to -40 F (-45.6 to -40 C)
Zone 3 -40 to -30 F (-40 to -34.5 C)
Zone 4 -30 to -20 F (-43.5 to -28.9 C)
Zone 5 -20 to -10 F (-28.9 to -23.3 C)
Zone 6 -10 to 0 F (-23.3 to -17.8 C)
Zone 7 0 to 10 F (-17.8 to -12.3 C)
Zone 8 10 to 20 F (-12.3 to -6.6 C)
Zone 9 20 to 30 F (-6.6 to -1.1 C)
Zone 10 30 to 40 F (-1.1 to 4.4 C)
Zone 11 40 F and above (4 C and above)
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