United States Edition

USDA Hardiness Zone 9b

Zone 9b 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 979 gardens being tracked on Folia that are in USDA Zone 9b.

Typical example plants that tend to grow vigorously in this zone include Rose, Chili pepper, Sweet pepper, Lettuce, Tomato, Spinach, Basil, Bean, Carrot and Cucumber.

Some locations recently identified as being in this zone include Harlingen (United States), Vacaville (United States), Rohnert park (United States), Mesa, (United States), Irvine (United States), (France), San Tan Valley, Phoenix (United States), Orange County (United States), St. Petersburg (United States), Brea (United States), Hobart (Australia), South Orlando (United States), CAstelo de Vide (Portugal), Mecca (United States), Phoenix (United States), North Phoenix (United States), Houma (United States), Wangaratta (Australia), sacramento (United States), Orlando (United States), Sacramento (United States), Granada Hills (United States), Bradenton (United States), Youngsville (United States), Gloucester (Australia), Menlo Park (United States), Antelope (United States), Port Orford (United States), Brandon, FL (United States) and Corryong (Australia).

If your area is defined as within 9b, you typically get low temperatures of between -3°C (27°F) and -1°C (30°F)

Zone 9b has a corresponding Sunset zone of 16-22.

Due to large differences in average temperature, USDA Zone 9b is typically known as Zone 3 in Australia.

Hello, new zone 9b gardeners! View all


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New gardens in zone 9b View all

  • rdwhite2's rdwhite2's garden

    rdwhite2's garden

    Zone 9b Started planting seeds in Feb for Plumeria, various citrus, Caesalpinia, Nerium oleander, Canna, Bauhinia, Mangifera, Tamarindus, Thelvitia, . Have...

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    • 0
    • 0
    • 0
  • Sondra's windowsill garden

    windowsill garden

    Zone 9b

    • 3
    • 0
    • 0
    • 0
  • bagladycrisi's Indoor garden

    Indoor garden

    Zone 9b

    • 0
    • 0
    • 0
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  • Zura's Bit of it All garden

    Bit of it All garden

    Zone 9b This'll be a gathering of all the random flowers, shrubs and trees I've started to take care of around the land shared with in-laws. They're not mu...

    • 4
    • 1
    • 0
    • 0
  • Zura's Seedling Tray #2 garden

    Seedling Tray #2 garden

    Zone 9b Needed a second propagation tray! Got lots of stuff to grow!

    • 0
    • 0
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Popular plants for zone 9b gardens

More USDA Zones Map


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