Zip code 98850 is in USDA hardiness zone 7a, which means plants there can survive temperatures as low as 0 to 5°F each year.

98850 is in zone 7a. Hardiness zones and growing zones are the same thing, and the terms are used interchangeably.

Use zone 7a when selecting plants for 98850. Plants rated for other zones may not survive 98850's winter temperatures. Always check plant tags and labels for zone recommendations.

While you can try plants from other zones in 98850, they may need winter protection or indoor shelter during cold spells. Focus on plants recommended for Rock Island's climate for the best results.

For detailed growing zone information, visit our page on the growing zone for Rock Island.

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

Recommended vegetables for 98850 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.

The best fruits for 98850 include Apples, Apricots, Blackberries, Blueberries, Cherries, Currants, Elderberries, Figs, Grapes, Kiwifruit, Mulberries, Nectarines, Pawpaw, Peaches, Pears, Persimmons, Plums, Pomegranates, Raspberries and Strawberries.

For 98850 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.

Trees for 98850'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).

We're still building our shrubs database for 98850. Our data is updated regularly with the latest USDA data, so check back often.