Zip code 18421 is in USDA hardiness zone 6a, which means plants there can survive temperatures as low as -10 to -5°F each year.

18421 is in zone 6a. Hardiness zones and growing zones are the same thing, and the terms are used interchangeably.

Use zone 6a when selecting plants for 18421. Plants rated for other zones may not survive 18421's winter temperatures. Always check plant tags and labels for zone recommendations.

While you can try plants from other zones in 18421, they may need winter protection or indoor shelter during cold spells. Focus on plants recommended for Forest City's climate for the best results.

For detailed growing zone information, visit our page on the growing zone for Forest City.

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

Recommended vegetables for 18421 include Beans, Beets, Bell Peppers, Broccoli, Carrots, Cauliflower, Corn, Cucumbers, Eggplant, Green Onions, Kale, Lettuce, Peas, Radishes, Spinach, Squash, Swiss Chard, Tomatoes, Turnips and Zucchini.

The best fruits for 18421 include Apples, Apricot, Blackberries, Blueberries, Currants, Elderberries, Figs, Grapes, Hardy kiwi, Mulberries, Nectarines, Peach, Pears, Persimmons, Plums, Quince, Raspberries, Sour cherries, Strawberries and Sweet cherries.

For 18421 we recommend flowers like Black-eyed Susan, Bleeding heart, Butterfly Bush, Columbine., Coneflower, Daffodils, Daylily, Geranium, Hydrangea, Lavender, Marigold, Pansies, Peony, Rhododendron, Rose, Salvia, Shasta Daisy, Sunflower, Tulips and Zinnia.

Trees for 18421's temperatures include American Elm, Balsam Fir, Black Cherry, Black Walnut, Colorado Blue Spruce, Common Juniper, Dogwood, Eastern Redbud, Eastern White Pine, Honey Locust, Japanese Maple, Northern Red Oak, Norway Spruce, Paper Birch, Pin Oak, Red Maple, Sugar Maple, Sweetgum, White Ash and Yellow Buckeye.

We're still building our shrubs database for 18421. Our data is updated regularly with the latest USDA data, so check back often.