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 284 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, Lettuce, Sunflower and Winter squash.

Some locations recently identified as being in this zone include Edmonton (Canada), Edmonton (Canada), Teton Valley Idaho (United States), Calgary (Canada), Tunica (United States), Edmonton (Canada), Aurora (United States), Naples (United States), Laurentians (Canada), 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), Winnipeg (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) and (Singapore).

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


Join our Garden Tracking community!

Folia is the best Garden Tracking community on the web - sign up for a free account today, or take our Tour to find out more.

New gardens in zone 3b View all

Popular plants for zone 3b gardens

More USDA Zones Map


Treehugger logo

Folia's cool webtool helps you get all your seeds in a row - from listing chores to tracking frosts, researching sowing and harvesting timing to tracking observations about your garden.

More buzz about us...

Latest Activity

Folia Badges and Widgets

Folia Blog Widgets

Want some super cool badges to stick on your blog? What about a funky widget that shows everyone what you are growing? Sounds like you need to get over to our Goodies page pronto!

Tour | About | Help & Support | Contact | Terms | Privacy | Community Guidelines | Goodies

Homegrown by Nic & Nath All photos and content © their respective owners.

Free Gardening database | Free garden organizer | Vegetable garden software | Mobile gardening app

Popular Plants: Tomato | Sweet pepper | Chili pepper | Basil | Bean | Rose | Cucumber | Carrot | Lettuce | Onion | Strawberry | Daylily | Spinach | Potato | Radish