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USDA hardiness zone by ZIP

USDA hardiness zone for ZIP 77002 (Houston)

ZIP 77002 is USDA hardiness zone 9b; use the Houston frost station's Feb 20 last frost and Dec 5 first frost to turn that zone into a planting calendar.

Source: houston-hobby frost station, USDA zone 9b, 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 77002 is in USDA hardiness zone 9b. 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 9b

Houston, TX · Zone 9b Tomatoes Feb 27 Open answer · last frost Feb 20 Houston, TX · Zone 9b Peppers Mar 6 Open answer · last frost Feb 20 Houston, TX · Zone 9b Basil Mar 2 Open answer · last frost Feb 20 Houston, TX · Zone 9b Carrots Jan 30 Open answer · last frost Feb 20 Houston, TX · Zone 9b Lettuce Feb 6 Open answer · last frost Feb 20 Houston, TX · Zone 9b Cucumbers Mar 2 Open answer · last frost Feb 20 Houston, TX · Zone 9b Zucchini Mar 2 Open answer · last frost Feb 20 Houston, TX · Zone 9b Cilantro Feb 6 Open answer · last frost Feb 20 Houston, TX · Zone 9b Bush beans Feb 27 Open answer · last frost Feb 20 Houston, TX · Zone 9b Spinach Jan 23 Open answer · last frost Feb 20 Houston, TX · Zone 9b Radishes Jan 23 Open answer · last frost Feb 20 Houston, TX · Zone 9b Kale Feb 6 Open answer · last frost Feb 20 Houston, TX · Zone 9b Watermelon Mar 6 Open answer · last frost Feb 20