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Growing Zone Information

  zone map key code


This USDA map divides the country into PLANT HARDINESS ZONES based on average lowest winter temperatures (see map below). We include ZONE ranges in our descriptions of hardy plants so you can tell if the plants you choose can survive in your location or the location of a gift recipient. We ship live plants, roots and bulbs at the right time for planting for your zone.

For annuals we list your expected Spring frost free date - this is helpful in determining when you can safely plant annual seeds and plants.

Your Zone Zone 10 Zone 9 Zone 8 Zone 7 Zone 6 Zone 5 Zone 4 Zone 3
Your Lowest Temp (F.) 30° to 40° + 20° to 30° 10° to 20° 0° to 10° -10° to 0° -20° to -10° -30° to -20° -40° to -30°
Your Last Frost Date (approximate) February Early March Early April Late April Mid- May Late May Early June Mid- June

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Gardening Tip of the Day

  • If there is poison ivy on your property, late summer is an ideal time to treat it with a herbicide. The full-grown leaves of mature plants provide lots of surface for the spray to adhere for the maximum effect. Spray poison ivy before the plants have berries; otherwise birds will carry, drop and spread the nuisance.
    Use a non-selective herbicide such as Roundup, but be aware it will kill any plant the spray may contact. Spray on a windless day and follow all the directions on the product label carefully. Allow 10 days for signs of success. Very woody poison ivy vines may need a second spraying.