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APR 29, 2026
Established 2011

The Plant Guide Online

Growing zones & plants for every town in America

What Growing Zone Is Allentown?

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

— Plate —FL · USDA hardiness
map of growing zone 9a
Latest FL growing zone map

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

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Show Allentown's growing zone on my site

— Plate —FL · USDA hardiness
map of growing zone 9a
Latest FL 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 Allentown is in growing zone 9a this means that plants there can survive temperatures as low as 20 to 25 degrees Fahrenheit. Plants for Allentown'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 Allentown area has been affected, refer to this map of half zone changes from the 2012 version of the USDA zones to the 2023 version.

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!

Ready to start planning your garden? Browse our curated list of plants recommended for Allentown, FL that are matched to this hardiness zone.

Hardiness Zone FAQ

Have questions about hardiness zones and what they mean for your garden? Check out our FAQ below for quick answers to common questions about USDA hardiness zones and how they affect plant selection in Allentown, FL.

№ 01What hardiness zone is Allentown, FL?+

The USDA hardiness zone is 9a for Allentown. This is sometimes also referred to as the growing or planting zone. These terms are used interchangeably.

№ 02What does growing zone 9a mean for Allentown, FL?+

Growing zone 9a means that plants in Allentown, FL can survive temperatures as low as 20 to 25 degrees Fahrenheit. This zone designation helps you choose plants that will thrive in your local climate conditions.

№ 03How do I use the growing zone information for Allentown?+

Keep your growing zone of 9a in mind when choosing plants for Allentown. The growing zone tells you the average low temperatures that occur each year in Allentown. If you select plants from zones other than 9a, then you may need to provide additional care during the coldest months of the year.

№ 04Has Allentown's growing zone changed?+

The USDA updated their hardiness zone maps in 2023. As a result, Allentown may have experienced zone changes. Some areas of the Southeast warmed by half a zone, while areas of the Western United States had their zones lowered as a result of additional data becoming available.

№ 05What plants grow best in zone 9a?+

Visit our page on the best plants for Allentown to see a full list recommendations for the area.

№ 06Can I grow plants from other zones in Allentown?+

While you can try plants from other zones, they may need winter protection or indoor shelter during cold spells. Focus on plants recommended for Allentown's climate for the best results.

Allentown's Growing Zone Details

USDA Growing Zone: 9a

Zip Codes:

Longitude: -87.0822

Latitude: 30.7745

Lowest Avg Temperatures (F): 20 to 25

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Map of the Allentown Area

— Map —Lat 30.7745, Lon -87.0822
Tile data © Google Maps

All Towns In FL

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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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