When to Plant Mustard in Santa Monica, California (90403)
Location
Santa Monica, California
ZIP Code
90403
USDA Zone
11a
Last Frost
Friday, January 1, 2027
📅 Planting Calendar
Direct Sow Outdoors Friday, November 20, 2026
Pro Tip: Mustard can be directly sown outdoors. Plant 6 weeks before your last frost date.
🌿 Plant Details
Scientific Name Brassica juncea
Days to Maturity 56 days
☀️ Growing Requirements
☀️
Sun
Full Sun
💧
Water
Regular
Seeds typically germinate in 1-7 days
🤝 Good Companions
CabbageCauliflowerRadishBrussel SproutTurnip
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Growing Mustard in Zone 11a
Mustard (Brassica juncea) is a popular garden vegetable. In Santa Monica, California, which is in USDA Hardiness Zone 11a, you should direct sow seeds around Friday, November 20, 2026.
Your average last frost date is Friday, January 1, 2027. Mustard grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.