When to Plant Mustard in Columbia, California (95310)
Location
Columbia, California
ZIP Code
95310
USDA Zone
9a
Last Frost
Saturday, February 20, 2027
📅 Planting Calendar
Direct Sow Outdoors Saturday, January 9, 2027
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 9a
Mustard (Brassica juncea) is a popular garden vegetable. In Columbia, California, which is in USDA Hardiness Zone 9a, you should direct sow seeds around Saturday, January 9, 2027.
Your average last frost date is Saturday, February 20, 2027. Mustard grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.