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Hardiness Zones for Realworld Imagery Plant Collections

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Hardiness Zone means the annual minimum temperature range a plant will survive. This is only a guide, as many other factors can affect a local region such as humidity, heat, moisture, soil, winds, and other conditions. Hardiness Zones were originally developed by the United States Department of Agriculture (USDA). Many plants hardy in lower zones usually grow well in higher zones.

Zones

Fahrenheit degrees

Celsius degrees

Zone 1

below -50 F

below -46 C

Zone 2

-50 to -40 F

-46 to -40 C

Zone 3

-40 to -30 F

-40 to -34 C

Zone 4

-30 to -20 F

-34 to -29 C

Zone 5

-20 to -10 F

-29 to -23 C

Zone 6

-10 to 0 F

-23 to -18 C

Zone 7

0 to 10 F

-18 to -12 C

Zone 8

10 to 20 F

-12 to -7 C

Zone 9

20 to 30 F

-7 to -1 C

Zone 10

30 to 40 F

-1 to 4 C

Zone 11

40 to 50 F

4 to 10 C

Zone 12

above 50 F

above 10 C

Plants collections specifically for Zones 2 thru 7 view Professional Trees & Shrubs II and Foreground Plants: Zones 2-7 Color and Zones 2-7 Foliage.


Plants collections specifically for Zones 8 thru 12 view Professional Trees & Shrubs III, Tropicals & more, and Foreground Plants: Palms, Zones 8-12 Color, and Zones 8-12 Foliage.

 

 

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