What Growing Zone Is Oak Glen?

Our records indicate the United States Department of Agriculture has given Oak Glen a growing zone designation of 9b. Sometimes also called the planting or hardiness zone, this zone number gives you an idea of what plants can and cannot grow in Oak Glen's climate based on the average extreme annual temperature. .Our data is based on the latest 2023 USDA maps, which used Oak Glen's weather data from 1991 - 2020 in their analysis.

If you are looking for plants suitable for growing in the Oak Glen area, head on over to our page on plants that grow well in Oak Glen, CA.

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Latest CA growing zone map

The growing zone is a measure of the lowest temperature that a plant can survive based on average lowest year temperatures, helping you to decide what plants would grow best in your particular climate. Since Oak Glen is in growing zone 9b this means that plants there can survive temperatures as low as 25 to 30 degrees Fahrenheit. Plants for Oak Glen's climate should be chosen with this in mind, or plants should be moved inside to keep their core temperature in the right range if necessary.

Some zones may have been changed by the USDA as of 2023. To see if the Oak Glen area has been affected, refer to this map of half zone changes from the 2012 version of the USDA zones to the 2023 version.

Half zone changes from 2012 to 2023

The updated map shows that over half of the Southeast has warmed by about half a zone. For gardeners, that means you can now grow plants that tolerate a bit more heat and less frost than before. The tan areas reflect this shift. Meanwhile, the white areas had slight temperature changes, but not enough to move them into a new zone. In the Western U.S., a few spots shifted cooler. That’s not due to a colder climate, but because the new map uses a larger dataset, giving a more accurate picture of local conditions. It's important to keep track of these changes when planning your garden!

Oak Glen's Growing Zone Details

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Map of the Oak Glen Area

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Plants For Other States:

Looking for the best plants in a different area of the United States? Click on a button below to find plants that are ideal for that state's temperatures.

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Whimsical sign for your chicken coop area.

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Innovative pots that maintain optimal moisture levels.

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Large Greenhouse Kit

Spacious greenhouse for extending your growing season.

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