When to Plant Butternut Squash in San Luis Obispo, California (93401)
Location
San Luis Obispo, California
ZIP Code
93401
USDA Zone
9b
Last Frost
Wednesday, February 10, 2027
📅 Planting Calendar
Start Seeds Indoors Wednesday, January 13, 2027
Transplant Outdoors Wednesday, February 24, 2027
Pro Tip: Start Butternut Squash seeds indoors 4 weeks before your last frost date for best results.
🌿 Plant Details
Scientific Name Cucurbita moschata
Days to Maturity 100 days
☀️ Growing Requirements
☀️
Sun
Full Sun
💧
Water
Regular
Seeds typically germinate in 7-14 days
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Growing Butternut Squash in Zone 9b
Butternut Squash (Cucurbita moschata) is a popular garden vegetable. In San Luis Obispo, California, which is in USDA Hardiness Zone 9b, you should start seeds indoors around Wednesday, January 13, 2027.
Your average last frost date is Wednesday, February 10, 2027. Plan to transplant your Butternut Squash seedlings outdoors around Wednesday, February 24, 2027, about 2 weeks after your last frost date.