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USDA hardiness zone by ZIP

USDA hardiness zone for ZIP 80903 (Colorado Springs)

ZIP 80903 is USDA hardiness zone 6a; use the Colorado Springs frost station's May 15 last frost and Oct 1 first frost to turn that zone into a planting calendar.

Source: colorado-springs-muni frost station, USDA zone 6a, last updated 2026-06-28. Verify locally before planting high-value crops because microclimates, current weather, and yard exposure can move the safe date.

ZIP 80903 is in USDA hardiness zone 6a. For vegetables, the zone is useful context, but frost dates decide the actual planting window.

Use the ZIP calendar to turn the zone into crop-specific dates.

Planting calendars in zone 6a

Colorado Springs, CO · Zone 6a Tomatoes May 22 Open answer · last frost May 15 Colorado Springs, CO · Zone 6a Peppers May 29 Open answer · last frost May 15 Colorado Springs, CO · Zone 6a Basil May 25 Open answer · last frost May 15 Colorado Springs, CO · Zone 6a Carrots Apr 24 Open answer · last frost May 15 Colorado Springs, CO · Zone 6a Lettuce May 1 Open answer · last frost May 15 Colorado Springs, CO · Zone 6a Cucumbers May 25 Open answer · last frost May 15 Colorado Springs, CO · Zone 6a Zucchini May 25 Open answer · last frost May 15 Colorado Springs, CO · Zone 6a Cilantro May 1 Open answer · last frost May 15 Colorado Springs, CO · Zone 6a Bush beans May 22 Open answer · last frost May 15 Colorado Springs, CO · Zone 6a Spinach Apr 17 Open answer · last frost May 15 Colorado Springs, CO · Zone 6a Radishes Apr 17 Open answer · last frost May 15 Colorado Springs, CO · Zone 6a Kale May 1 Open answer · last frost May 15 Colorado Springs, CO · Zone 6a Watermelon May 29 Open answer · last frost May 15