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USDA hardiness zone by ZIP

USDA hardiness zone for ZIP 21201 (Baltimore)

ZIP 21201 is USDA hardiness zone 7b; use the Baltimore frost station's Apr 15 last frost and Nov 5 first frost to turn that zone into a planting calendar.

Source: baltimore-inner-harbor 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 21201 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

Baltimore, MD · Zone 7b Tomatoes Apr 22 Open answer · last frost Apr 15 Baltimore, MD · Zone 7b Peppers Apr 29 Open answer · last frost Apr 15 Baltimore, MD · Zone 7b Basil Apr 25 Open answer · last frost Apr 15 Baltimore, MD · Zone 7b Carrots Mar 25 Open answer · last frost Apr 15 Baltimore, MD · Zone 7b Lettuce Apr 1 Open answer · last frost Apr 15 Baltimore, MD · Zone 7b Cucumbers Apr 25 Open answer · last frost Apr 15 Baltimore, MD · Zone 7b Zucchini Apr 25 Open answer · last frost Apr 15 Baltimore, MD · Zone 7b Cilantro Apr 1 Open answer · last frost Apr 15 Baltimore, MD · Zone 7b Bush beans Apr 22 Open answer · last frost Apr 15 Baltimore, MD · Zone 7b Spinach Mar 18 Open answer · last frost Apr 15 Baltimore, MD · Zone 7b Radishes Mar 18 Open answer · last frost Apr 15 Baltimore, MD · Zone 7b Kale Apr 1 Open answer · last frost Apr 15 Baltimore, MD · Zone 7b Watermelon Apr 29 Open answer · last frost Apr 15