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USDA hardiness zone by ZIP

USDA hardiness zone for ZIP 97204 (Portland)

ZIP 97204 is USDA hardiness zone 9a; use the Portland frost station's Apr 1 last frost and Nov 10 first frost to turn that zone into a planting calendar.

Source: portland-intl frost station, USDA zone 9a, 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 97204 is in USDA hardiness zone 9a. 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 9a

Portland, OR · Zone 9a Tomatoes Apr 8 Open answer · last frost Apr 1 Portland, OR · Zone 9a Peppers Apr 15 Open answer · last frost Apr 1 Portland, OR · Zone 9a Basil Apr 11 Open answer · last frost Apr 1 Portland, OR · Zone 9a Carrots Mar 11 Open answer · last frost Apr 1 Portland, OR · Zone 9a Lettuce Mar 18 Open answer · last frost Apr 1 Portland, OR · Zone 9a Cucumbers Apr 11 Open answer · last frost Apr 1 Portland, OR · Zone 9a Zucchini Apr 11 Open answer · last frost Apr 1 Portland, OR · Zone 9a Cilantro Mar 18 Open answer · last frost Apr 1 Portland, OR · Zone 9a Bush beans Apr 8 Open answer · last frost Apr 1 Portland, OR · Zone 9a Spinach Mar 4 Open answer · last frost Apr 1 Portland, OR · Zone 9a Radishes Mar 4 Open answer · last frost Apr 1 Portland, OR · Zone 9a Kale Mar 18 Open answer · last frost Apr 1 Portland, OR · Zone 9a Watermelon Apr 15 Open answer · last frost Apr 1