Planting calendar
May Planting Guide for San Antonio, TX: Raised Beds, Containers & In-Ground Gardens
In May, San Antonio gardeners can focus on warm-season crops ideal for raised beds, containers, and in-ground planting. This is the time to plant heat-tolerant vegetables and herbs while avoiding frost-sensitive plants. Proper watering and soil preparation will ensure successful growth during the hot months ahead.
Plant now (quick list)
Tomatoes, Peppers, Eggplants, Okra, Sweet potatoes, Basil, Cucumbers, Beans
Plant now
- Tomatoes
- Peppers
- Eggplants
- Okra
- Sweet potatoes
- Basil
- Cucumbers
- Beans
- Melons
- Squash
Start indoors
- Pumpkins (for transplant later)
- Winter squash (for transplant later)
- Corn (if not direct sown)
- Sunflowers
- Herbs like dill and cilantro
Avoid
- Cool-season greens like spinach and lettuce
- Broccoli
- Cauliflower
- Cabbage
- Peas
- Radishes
Next 2 weeks
- Monitor soil moisture closely to prevent drying
- Mulch raised beds and containers to retain moisture
- Begin fertilizing established plants with balanced fertilizer
- Watch for pests like aphids and caterpillars
- Thin seedlings to avoid overcrowding
- Harden off indoor seedlings before transplanting
- Stake tall plants like tomatoes and peppers
- Water early in the morning or late evening to reduce evaporation
FAQs
Can I plant cool-season vegetables in May in San Antonio?
May is generally too warm for cool-season vegetables; they may bolt or suffer heat stress. Focus on warm-season crops instead.
How often should I water raised beds and containers in May?
Water daily or as needed to keep soil consistently moist but not soggy, especially during hot, dry spells.
Is it safe to transplant seedlings outdoors in May?
Yes, but harden off seedlings by gradually exposing them to outdoor conditions for 7–10 days before transplanting.
What pests should I watch for in May?
Look out for aphids, whiteflies, and caterpillars, which can damage young plants in warm weather.
Should I fertilize my plants now?
Yes, applying a balanced fertilizer every 3–4 weeks supports healthy growth during the active growing season.
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