Planting calendar
April Planting Guide for San Antonio, TX: Raised Beds, Containers & In-Ground Gardens
April in San Antonio is ideal for planting warm-season vegetables and herbs in raised beds, containers, and in-ground gardens. Focus on heat-tolerant crops and start some seeds indoors for a continuous harvest. Avoid frost-sensitive plants early in the month and prepare for the increasing heat.
Plant now (quick list)
Tomatoes, Peppers, Eggplants, Okra, Sweet potatoes, Basil, Cucumbers, Squash
Plant now
- Tomatoes
- Peppers
- Eggplants
- Okra
- Sweet potatoes
- Basil
- Cucumbers
- Squash
- Melons
- Beans
Start indoors
- Corn
- Watermelon (for transplant)
- Pumpkin
- Sunflowers
- Malabar spinach
- Sweet corn
- Hot peppers (if not already started)
- Herbs like dill and cilantro
Avoid
- Broccoli
- Cauliflower
- Brussels sprouts
- Cabbage
- Spinach
- Lettuce (late April heat can bolt)
- Kale
- Carrots (late plantings risk poor germination)
Next 2 weeks
- Harden off indoor seedlings before transplanting
- Mulch raised beds and containers to retain moisture
- Monitor soil moisture closely as temperatures rise
- Watch for pests like aphids and caterpillars
- Begin regular fertilization with balanced nutrients
- Thin seedlings to prevent overcrowding
- Plant herbs like oregano and thyme outdoors
- Start trellises for vining crops like cucumbers
- Check container drainage regularly
FAQs
Can I plant tomatoes directly in the ground in April in San Antonio?
Yes, April is a good time to transplant tomato seedlings outdoors as the risk of frost is minimal and soil temperatures are warm enough.
Should I water raised beds differently than in-ground gardens in April?
Raised beds tend to dry out faster, so monitor moisture closely and water more frequently compared to in-ground gardens, especially as temperatures rise.
Is it necessary to start seeds indoors for warm-season crops in San Antonio?
Starting some seeds indoors, like corn and watermelon, can give you a head start and ensure stronger plants for transplanting after the last frost.
What are common pests to watch for in April in San Antonio gardens?
Aphids, caterpillars, and whiteflies can appear as temperatures warm, so inspect plants regularly and use organic controls if needed.
Can I grow leafy greens in April in San Antonio?
Leafy greens like lettuce and spinach may bolt quickly due to heat, so it's better to avoid planting them late in April or choose heat-tolerant varieties.
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