Local Growing Guide
Grow Lettuce in San Diego, CA
Your local guide to growing lettuce in San Diego — zone-specific timing, local tips, and care advice.
Cool
📍 San Diego
🌡️ Zone 10a
Days to Harvest
35–60
Spacing
8–10"
Method
Both
Season
Cool
When to Plant Lettuce in San Diego
San Diego sits in USDA Zone 10a. Here are your local planting windows.
Start Indoors
Sept 1 – Nov 15
Transplant Outdoors
Sept – Feb
Direct Sow
Oct – Apr
Growing Lettuce in San Diego
📋 Key Timing
Skip lettuce April through September unless you have shade cloth.
Start your lettuce seeds indoors during Sept 1 – Nov 15. Move seedlings to the garden between Sept – Feb. Sow seeds directly in your San Diego garden between Oct – Apr.
🏖️ Shade Cloth for San Diego
San Diego summers can be intense. Use 30-50% shade cloth to protect lettuce during the hottest months.
Watch for These Pests in San Diego
Frequently Asked Questions
Can I grow Lettuce in San Diego?
Yes! Lettuce grows well in San Diego's Zone 10a climate. Skip lettuce April through September unless you have shade cloth.
When to plant Lettuce in San Diego?
Transplant lettuce outdoors between Sept – Feb for best results in San Diego.
Does Lettuce need shade in San Diego?
Yes, lettuce benefits from 30-50% shade cloth during San Diego's hot summer months.
More Growing Guides
Full Lettuce growing guide · Zone 10 planting dates · All plants for San Diego