When to Plant Spinach in San Jose, California (95152)
Location
San Jose, California
ZIP Code
95152
USDA Zone
9b
Last Frost
Wednesday, February 10, 2027
📅 Planting Calendar
Direct Sow Outdoors Wednesday, December 30, 2026
Pro Tip: Spinach can be directly sown outdoors. Plant 6 weeks before your last frost date.
🌿 Plant Details
Scientific Name Cynara scolymus
Days to Maturity 40 days
Mature Height 6-12"
Spread 6"
Type Leaf
Fruit Size N/A
☀️ Growing Requirements
☀️
Sun
Partial Shade to Full Sun
💧
Water
Regular (keep moist)
↔️
Spacing
6" apart
🌱
Planting Depth
0.5" deep
Seeds typically germinate in 7-14 days
🤝 Good Companions
StrawberryPeaBeanBrassicas
Other Plants for San Jose
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Growing Spinach in Zone 9b
Spinach (Cynara scolymus) is a popular garden vegetable. In San Jose, California, which is in USDA Hardiness Zone 9b, you should direct sow seeds around Wednesday, December 30, 2026.
Your average last frost date is Wednesday, February 10, 2027. Spinach grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.