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Material Detail

US Grow Zones — ZIP hardiness zones & frost dates

US Grow Zones — ZIP hardiness zones & frost dates

Free educational tool and open dataset for educators and home gardeners. Look up your 2023 USDA hardiness zone and first/last frost dates by ZIP code. Planting calendars for 512 U.S. cities, a free zone JSON API and embed widget.

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More about this material

Material Type:
Development Tool
Date Added to MERLOT:
November 6, 2026
Date Modified in MERLOT:
November 6, 2026
Author:
 
Submitter:
Damon Tang
Primary Audience:
High School, College General Ed, Professional
Technical Format:
Website
Mobile Compatibility:
Not specified at this time
Language:
English
Cost Involved:
No
Source Code Available:
Unknown
Creative Commons:
Unknown

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