GrowZone

USDA hardiness zone by ZIP

USDA hardiness zone for ZIP 43215 (Columbus)

ZIP 43215 is USDA hardiness zone 6b; use the Columbus frost station's Apr 30 last frost and Oct 15 first frost to turn that zone into a planting calendar.

Source: columbus-port-columbus frost station, USDA zone 6b, 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 43215 is in USDA hardiness zone 6b. 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 6b

Columbus, OH · Zone 6b Tomatoes May 7 Open answer · last frost Apr 30 Columbus, OH · Zone 6b Peppers May 14 Open answer · last frost Apr 30 Columbus, OH · Zone 6b Basil May 10 Open answer · last frost Apr 30 Columbus, OH · Zone 6b Carrots Apr 9 Open answer · last frost Apr 30 Columbus, OH · Zone 6b Lettuce Apr 16 Open answer · last frost Apr 30 Columbus, OH · Zone 6b Cucumbers May 10 Open answer · last frost Apr 30 Columbus, OH · Zone 6b Zucchini May 10 Open answer · last frost Apr 30 Columbus, OH · Zone 6b Cilantro Apr 16 Open answer · last frost Apr 30 Columbus, OH · Zone 6b Bush beans May 7 Open answer · last frost Apr 30 Columbus, OH · Zone 6b Spinach Apr 2 Open answer · last frost Apr 30 Columbus, OH · Zone 6b Radishes Apr 2 Open answer · last frost Apr 30 Columbus, OH · Zone 6b Kale Apr 16 Open answer · last frost Apr 30 Columbus, OH · Zone 6b Watermelon May 14 Open answer · last frost Apr 30