Planting calendar
April Planting Guide for San Diego Gardens: Raised Beds, Containers & In-Ground
April is an excellent month to plant a variety of warm-season vegetables and herbs in San Diego's mild climate. Focus on planting heat-tolerant crops directly outdoors in raised beds, containers, or in-ground gardens. Start seeds indoors for longer-season plants to transplant later.
Plant now (quick list)
Tomatoes, Peppers, Eggplants, Basil, Zucchini, Cucumbers, Beans, Melons
Plant now
- Tomatoes
- Peppers
- Eggplants
- Basil
- Zucchini
- Cucumbers
- Beans
- Melons
- Sweet corn
Start indoors
- Winter squash
- Pumpkins
- Cantaloupe
- Okra
- Sweet potatoes
Avoid
- Leafy greens like lettuce and spinach (bolting risk)
- Broccoli
- Cauliflower
- Brussels sprouts
- Peas
Next 2 weeks
- Monitor soil moisture as temperatures rise
- Harden off indoor seedlings before transplanting
- Mulch raised beds to retain moisture
- Watch for pests like aphids and caterpillars
- Fertilize established plants with balanced nutrients
FAQs
Can I plant tomatoes directly in the ground in April in San Diego?
Yes, April's warm soil and mild temperatures are ideal for transplanting tomatoes outdoors.
Should I water newly planted seeds daily?
Keep soil consistently moist but not waterlogged; watering daily may be needed in containers or raised beds.
When is the best time to start peppers indoors?
Start pepper seeds indoors 8-10 weeks before the last expected frost, but in San Diego, starting in April is fine for late-season harvest.
How do I prevent pests in my April garden?
Regularly inspect plants, use insecticidal soap if needed, and encourage beneficial insects like ladybugs.
Is it necessary to fertilize in April?
Yes, applying a balanced fertilizer supports vigorous growth as plants enter their active growing phase.
Next steps
Get a personalized planting plan
Answer a few questions and generate a plan for your exact location and setup.
Build your garden shopping list
Get a starter kit checklist for what you want to grow (with optional links).
Ask the Gardener
Get quick answers and next-step guidance for your garden.
Want this page for a different city? Try the tool and enter your ZIP: Plant this month.