Planting calendar
May Planting Guide for San Diego Gardens: Raised Beds, Containers & In-Ground
In May, San Diego's mild climate allows for planting a wide variety of warm-season vegetables and herbs in raised beds, containers, or directly in the ground. Focus on heat-tolerant crops and summer vegetables to take advantage of the longer days and warming soil.
Plant now (quick list)
Tomatoes, Peppers, Eggplant, Basil, Zucchini, Cucumbers, Green beans, Sweet potatoes
Plant now
- Tomatoes
- Peppers
- Eggplant
- Basil
- Zucchini
- Cucumbers
- Green beans
- Sweet potatoes
- Okra
Start indoors
- Winter squash
- Melons
- Pumpkins
- Corn
- Late-season tomatoes
Avoid
- Cool-season crops like broccoli
- Cauliflower
- Brussels sprouts
- Peas
- Spinach
Next 2 weeks
- Transplant seedlings of tomatoes and peppers outdoors
- Mulch raised beds and containers to retain moisture
- Begin regular watering schedules as temperatures rise
- Watch for pests like aphids and caterpillars
- Fertilize warm-season crops with balanced fertilizer
FAQs
Can I plant tomatoes directly in the ground in May?
Yes, May is ideal for transplanting tomato seedlings outdoors in San Diego, as the risk of frost is minimal and soil temperatures are warm enough.
How often should I water container plants in May?
Container plants typically need daily watering in May due to warmer temperatures and faster soil drying, but always check soil moisture before watering.
Is it necessary to fertilize plants in May?
Yes, applying a balanced fertilizer supports vigorous growth for warm-season crops during this active growing period.
What pests should I watch for in May?
Common pests include aphids, whiteflies, and caterpillars; regular inspection and early treatment help protect your plants.
Can I still start cool-season vegetables in May?
It's best to avoid planting cool-season crops now, as rising temperatures can cause them to bolt or struggle in San Diego's climate.
Next steps
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