The Plant Guide Online  ยท  Celebrating 15 years online
MAY 1, 2026
Established 2011

The Plant Guide Online

Growing zones & plants for every town in America

What Plants Grow Well In 21904?

The USDA hardiness zone is 7a in the 21904 zip code. This zone is a measure of the lowest temperature that a plant can survive, and helps determine what plants would grow best in the area's climate. Below you'll find a list of the best plants for 21904's climate based on this hardiness zone.

Learn more about climate conditions on our page for Port Deposit's plant hardiness zone.

You can also look up the USDA growing zone for 21904 directly to see the temperature data behind these planting recommendations.

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โ˜…

Trees for 21904

20 on file
  • American BeechTree
  • American HollyTree
  • Black CherryTree
  • Black WalnutTree
  • Blue SpruceTree
  • DogwoodTree
  • Eastern Red CedarTree
  • Green AshTree
  • Honey LocustTree
  • Northern Red OakTree
  • Pin Oak.Tree
  • RedbudTree
  • River BirchTree
  • Silver MapleTree
  • Sugar MapleTree
  • SweetgumTree
  • White AshTree
  • White OakTree
  • White PineTree
  • Yellow Poplar (Tulip Tree)Tree
โ˜…

Fruits for 21904

20 on file
  • ApplesFruit
  • ApricotsFruit
  • BlackberriesFruit
  • BlueberriesFruit
  • CherriesFruit
  • CurrantsFruit
  • ElderberriesFruit
  • FigsFruit
  • GrapesFruit
  • KiwifruitFruit
  • MulberriesFruit
  • NectarinesFruit
  • PawpawFruit
  • PeachesFruit
  • PearsFruit
  • PersimmonsFruit
  • PlumsFruit
  • PomegranatesFruit
  • RaspberriesFruit
  • StrawberriesFruit

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Flowers for 21904

20 on file
  • AzaleasFlower
  • Butterfly BushFlower
  • ChrysanthemumsFlower
  • ConeflowersFlower
  • DaffodilsFlower
  • DayliliesFlower
  • GeraniumsFlower
  • HostasFlower
  • HydrangeasFlower
  • IrisFlower
  • LavenderFlower
  • MarigoldsFlower
  • PansiesFlower
  • PetuniasFlower
  • PhloxFlower
  • RosesFlower
  • SalviaFlower
  • SunflowersFlower
  • TulipsFlower
  • ZinniaFlower
โ˜…

Vegetables for 21904

20 on file
  • BeetsVegetable
  • Bell PeppersVegetable
  • BroccoliVegetable
  • CabbageVegetable
  • CarrotsVegetable
  • CucumbersVegetable
  • EggplantVegetable
  • GarlicVegetable
  • Green BeansVegetable
  • KaleVegetable
  • LettuceVegetable
  • OnionsVegetable
  • RadishesVegetable
  • SpinachVegetable
  • SquashVegetable
  • Sweet CornVegetable
  • Sweet PotatoesVegetable
  • Swiss ChardVegetable
  • TomatoesVegetable
  • ZucchiniVegetable
โ€” Plate โ€”MD ยท USDA hardiness
best plants to grow in 21904

Planting Advice for 21904

Have questions about planting in 21904's climate? Check out our FAQ below for answers to common questions about growing plants in the area.

โ„– 01What hardiness zone is 21904?+

Zip code 21904 is in USDA hardiness zone 7a, which means plants there can survive temperatures as low as 0 to 5ยฐF each year.

โ„– 02What growing zone is 21904?+

21904 is in zone 7a. Hardiness zones and growing zones are the same thing, and the terms are used interchangeably.

โ„– 03What does zone 7a mean for 21904?+

Use zone 7a when selecting plants for 21904. Plants rated for other zones may not survive 21904's winter temperatures. Always check plant tags and labels for zone recommendations.

โ„– 04Can I grow plants for other zones in 21904?+

While you can try plants from other zones in 21904, they may need winter protection or indoor shelter during cold spells. Focus on plants recommended for Port Deposit's climate for the best results.

โ„– 05Where can I learn more about 21904's hardiness zone?+

For detailed growing zone information, visit our page on the growing zone for Port Deposit.

โ„– 06Can I search for plants by town instead of postal code?+

Absolutely. We offer plant recommendations for every town in the United States. We have a page on the best plants for Port Deposit that you might be interested in.

โ„– 07Best vegetables for 21904?+

Recommended vegetables for 21904 include Beets, Bell Peppers, Broccoli, Cabbage, Carrots, Cucumbers, Eggplant, Garlic, Green Beans, Kale, Lettuce, Onions, Radishes, Spinach, Squash, Sweet Corn, Sweet Potatoes, Swiss Chard, Tomatoes and Zucchini.

โ„– 08What fruits grow well in 21904?+

The best fruits for 21904 include Apples, Apricots, Blackberries, Blueberries, Cherries, Currants, Elderberries, Figs, Grapes, Kiwifruit, Mulberries, Nectarines, Pawpaw, Peaches, Pears, Persimmons, Plums, Pomegranates, Raspberries and Strawberries.

โ„– 09Good flowers for 21904?+

For 21904 we recommend flowers like Azaleas, Butterfly Bush, Chrysanthemums, Coneflowers, Daffodils, Daylilies, Geraniums, Hostas, Hydrangeas, Iris, Lavender, Marigolds, Pansies, Petunias, Phlox, Roses, Salvia, Sunflowers, Tulips and Zinnia.

โ„– 10What trees grow well in 21904?+

Trees for 21904's temperatures include American Beech, American Holly, Black Cherry, Black Walnut, Blue Spruce, Dogwood, Eastern Red Cedar, Green Ash, Honey Locust, Northern Red Oak, Pin Oak., Redbud, River Birch, Silver Maple, Sugar Maple, Sweetgum, White Ash, White Oak, White Pine and Yellow Poplar (Tulip Tree).

โ„– 11Best shrubs for 21904?+

We're still building our shrubs database for 21904. Our data is updated regularly with the latest USDA data, so check back often.

Best Time to Plant in Port Deposit

Check the growing calendar for Port Deposit at the Old Farmer's Almanac to see the best planting times for the region.

โ€” Map โ€”Lat 39.62303, Lon -76.07812
Tile data ยฉ Google Maps

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Looking for more recommendations for 21904? Follow us on Instagram for even more gardening and homesteading tips and tricks.

Other Towns in Maryland

We have plant recommendations for most towns in Maryland. Select a town from the list below to find the best plants for your area based on the latest climate information.

Best Plants By State

Maryland not the right state? We have plant recommendations for every state, town and zip code in the United States. Choose a state from the list below to find the best plants for your area.

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