What Growing Zone Is Rosaryville?

Our records indicate the United States Department of Agriculture has given Rosaryville a growing zone designation of 7b. Sometimes also called the planting or hardiness zone, this zone number gives you an idea of what plants can and cannot grow in Rosaryville's climate based on the average extreme annual temperature.Our data is based on the latest 2023 USDA maps, which used Rosaryville's weather data from 1991 - 2020 in their analysis.

Latest MD growing zone map

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

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Latest MD 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 Rosaryville is in growing zone 7b this means that plants there can survive temperatures as low as 5 to 10 degrees Fahrenheit. Plants for Rosaryville'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 Rosaryville 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!

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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 Rosaryville, MD.

The USDA hardiness zone is 7b for Rosaryville. This is sometimes also referred to as the growing or planting zone. These terms are used interchangeably.

Rosaryville's Growing Zone Details

USDA Growing Zone: 7b

Zip Codes:

20623, 20772

Longitude: -76.8266

Latitude: 38.7672

Lowest Avg Temperatures (F): 5 to 10

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Map of the Rosaryville Area

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