United States Edition

USDA Hardiness Zone 3b

Zone 3b is a zone in the USDA Hardiness climate zone rating system. The USDA Hardiness system can be useful to gardeners in establishing if certain plants are suitable for your garden's microclimate and was originally devised by the US department of agriculture. There are currently 220 gardens being tracked on Folia that are in USDA Zone 3b.

Some popular plants that tend to grow very well in this zone include Chili pepper, Tomato, Sweet pepper, Carrot, Bean, Potato, Broccoli, Petunia, Sunflower and Winter squash.

Some locations recently identified as being in this zone include Lethbridge (Canada), Cold Lake (Canada), Jericho, VT (United States), Edmonton (Canada), Eau Claire (United States), Ottawa (Canada), Ottawa (Canada), Lethbridge (Canada), mount Washington (United States), (Canada), Altona (Canada), Edmonton (Canada), Hinesburg (United States), Edmonton (Canada), Bozeman, MT (United States), Palmer, Alaska (United States), Atlanta (United States), Rexburg, Idaho (United States), san diego (United States), (Singapore), San Francisco (United States), Edmonton (Canada), Stanchfield, MN (United States), Driggs (United States), Tomahawk, WI (United States), Winnipeg (Canada), Alberton (Canada), Calgary (Canada), Hays, Alberta (Canada) and Halifax (Canada).

If you are in 3b, lowest temperatures in your garden should be around -37°C [-35°F] to -34°C [-29°F].

The corresponding Sunset zone for 3b is approx. A1.

Hello, new zone 3b gardeners! View all

kelly
KeriAnne
Kippersforbreakfast
madmblue
mfadel20
cporkkon
Cheers
nestandsparkle
GardenGusto
dansager1
GeorgeSr

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New gardens in zone 3b View all

  • GeorgeSr's Compost Pile #3 garden

    Compost Pile #3 garden

    Zone 3b After thinking about the new compost pile, I decided to remove most of the dirt covering the pile and use the dirt to level the top of the trail on...

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  • GeorgeSr's new compost garden

    new compost garden

    Zone 3b After thinking about the new compost pile, I decided to remove most of the dirt covering the pile and use the dirt to level the top of the trail on...

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  • GeorgeSr's Sandbag grow bag garden

    Sandbag grow bag garden

    Zone 3b Converted a sub-irrigated and a raised bed to HKPG.

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  • prairiepatch's pole garden garden

    pole garden garden

    Zone 3b

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  • GeorgeSr's Greenhouse #2 garden

    Greenhouse #2 garden

    Zone 3b Decided to make another greenhouse garden and locate it just north of the existing greenhouse. There will be a three foot space between the two gar...

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Popular plants for zone 3b gardens

More USDA Zones Map

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