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USDA hardiness zone by ZIP

USDA hardiness zone for ZIP 74103 (Tulsa)

ZIP 74103 is USDA hardiness zone 7b; use the Tulsa frost station's Apr 5 last frost and Oct 30 first frost to turn that zone into a planting calendar.

Source: tulsa-intl frost station, USDA zone 7b, 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 74103 is in USDA hardiness zone 7b. 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 7b

Tulsa, OK · Zone 7b Tomatoes Apr 12 Open answer · last frost Apr 5 Tulsa, OK · Zone 7b Peppers Apr 19 Open answer · last frost Apr 5 Tulsa, OK · Zone 7b Basil Apr 15 Open answer · last frost Apr 5 Tulsa, OK · Zone 7b Carrots Mar 15 Open answer · last frost Apr 5 Tulsa, OK · Zone 7b Lettuce Mar 22 Open answer · last frost Apr 5 Tulsa, OK · Zone 7b Cucumbers Apr 15 Open answer · last frost Apr 5 Tulsa, OK · Zone 7b Zucchini Apr 15 Open answer · last frost Apr 5 Tulsa, OK · Zone 7b Cilantro Mar 22 Open answer · last frost Apr 5 Tulsa, OK · Zone 7b Bush beans Apr 12 Open answer · last frost Apr 5 Tulsa, OK · Zone 7b Spinach Mar 8 Open answer · last frost Apr 5 Tulsa, OK · Zone 7b Radishes Mar 8 Open answer · last frost Apr 5 Tulsa, OK · Zone 7b Kale Mar 22 Open answer · last frost Apr 5 Tulsa, OK · Zone 7b Watermelon Apr 19 Open answer · last frost Apr 5