Planting calendar
April Planting Guide for San Diego Gardens: Raised Beds, Containers & In-Ground
April is an ideal month to plant warm-season vegetables and herbs in San Diego’s mild climate. Focus on tomatoes, peppers, and basil for raised beds, containers, or in-ground gardens. This guide helps you maximize your spring garden success with practical planting tips.
Plant now (quick list)
Tomatoes, Peppers, Basil, Zucchini, Eggplant, Green beans, Cucumbers, Melons
Plant now
- Tomatoes
- Peppers
- Basil
- Zucchini
- Eggplant
- Green beans
- Cucumbers
- Melons
Start indoors
- Corn
- Okra
- Pumpkins
- Winter squash
- Melons (if not direct sowing)
Avoid
- Leafy greens like lettuce (bolting risk)
- Broccoli (heat sensitive)
- Cauliflower
- Brussels sprouts
- Peas (past season)
Next 2 weeks
- Continue transplanting warm-season seedlings outdoors
- Mulch raised beds to retain moisture
- Begin regular watering schedule for containers
- Watch for pests like aphids and caterpillars
- Fertilize tomatoes and peppers with balanced fertilizer
FAQs
Can I plant tomatoes directly in the ground in April in San Diego?
Yes, April’s warm soil and mild temperatures make it perfect for transplanting tomato seedlings directly into the ground.
How often should I water container plants in April?
Water containers every 1-2 days, depending on temperature and soil moisture, as containers dry out faster than in-ground beds.
Is it too late to start herbs like basil in April?
No, April is a great time to start basil either by direct sowing or transplanting seedlings outdoors.
What vegetables should I avoid planting in April due to heat?
Avoid cool-season crops like broccoli, cauliflower, and peas as they may bolt or fail in warmer temperatures.
Should I be concerned about frost in San Diego in April?
Frost risk is minimal in San Diego by April, but keep an eye on local forecasts if unusual cold snaps occur.
Next steps
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