Planting calendar
March Planting Guide for San Francisco Gardens: Raised Beds, Containers & In-Ground
March is an ideal time in San Francisco to plant cool-season vegetables and herbs in raised beds, containers, and in-ground gardens. Focus on leafy greens, root crops, and early season herbs that thrive in mild coastal climates. Start warm-season crops indoors to prepare for transplanting after the last frost risk passes.
Plant now (quick list)
Lettuce, Spinach, Kale, Carrots, Radishes, Peas, Broccoli, Cilantro
Plant now
- Lettuce
- Spinach
- Kale
- Carrots
- Radishes
- Peas
- Broccoli
- Cilantro
- Chard
- Beets
Start indoors
- Tomatoes
- Peppers
- Eggplants
- Basil
- Marigolds
- Zinnias
- Cucumbers
- Melons
- Squash
- Dahlias
Avoid
- Corn (too early, wait until late spring)
- Beans (wait for warmer soil)
- Sweet potatoes (too cool)
- Tropical plants (too cold)
- Citrus trees (avoid planting in March)
- Pumpkins (too early)
- Okra (too cool)
- Artichokes (best planted in fall)
- Asparagus (avoid disturbing crowns)
- Garlic (plant in fall, avoid now)
Next 2 weeks
- Thin seedlings of carrots and radishes for better growth
- Harden off indoor seedlings by gradually exposing them outdoors
- Prepare soil with compost for upcoming warm-season crops
- Monitor for aphids on leafy greens and treat if necessary
- Start trellises or supports for peas and climbing plants
- Water consistently but avoid overwatering to prevent root rot
- Mulch raised beds to retain moisture and suppress weeds
- Check container drainage to prevent waterlogging
- Plant additional rounds of quick-growing greens for continuous harvest
- Remove any damaged or yellowing leaves to promote plant health
FAQs
Can I plant tomatoes directly outdoors in March in San Francisco?
It's best to start tomatoes indoors in March and transplant them outdoors after the last frost risk, usually in late April or early May.
How often should I water raised beds in March?
Water raised beds when the top inch of soil feels dry, typically every 2-3 days depending on weather and soil type.
Are there any pests I should watch for in March?
Aphids and slugs are common pests in early spring; inspect plants regularly and use organic controls if needed.
Can I grow herbs in containers on my balcony?
Yes, many herbs like cilantro, basil, and chives grow well in containers with adequate sunlight and well-draining soil.
Should I fertilize my garden beds in March?
Applying a balanced, slow-release fertilizer or compost in early March can support healthy growth for spring vegetables.
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