Planting calendar
August Planting Guide for San Antonio, TX: Raised Beds, Containers & In-Ground Gardens
In August, San Antonio gardeners can focus on planting heat-tolerant fall crops in raised beds, containers, and in-ground gardens. This is an ideal time to sow seeds for vegetables like leafy greens and root crops that will mature as temperatures begin to moderate. Proper watering and shade management remain crucial during this hot month.
Plant now (quick list)
Bush beans, Okra, Sweet potatoes, Southern peas, Malabar spinach, Eggplant, Peppers, Tomatoes (heat-tolerant varieties)
Plant now
- Bush beans
- Okra
- Sweet potatoes
- Southern peas
- Malabar spinach
- Eggplant
- Peppers
- Tomatoes (heat-tolerant varieties)
- Collard greens
- Swiss chard
Start indoors
- Broccoli
- Cauliflower
- Cabbage
- Kale
- Brussels sprouts
- Lettuce
- Spinach
- Carrots
- Beets
- Radishes
Avoid
- Cool-season crops directly sown outdoors (due to heat)
- Tender seedlings without shade
- Excessive nitrogen fertilizers
- Waterlogging soil
- Planting root vegetables in poorly drained areas
- Overcrowding plants
- Planting frost-sensitive crops late in the month
- Leaving soil bare without mulch
- Ignoring pest control
- Neglecting consistent watering
Next 2 weeks
- Harden off indoor-started brassicas
- Apply mulch to conserve moisture
- Monitor for aphids and spider mites
- Thin seedlings in raised beds
- Begin transplanting cool-season starts into containers
- Adjust watering schedule for cooler evenings
- Fertilize fruiting plants lightly
- Prune leggy tomato plants
- Rotate crops in in-ground beds
- Check soil pH and amend if needed
FAQs
Can I plant cool-season vegetables directly in August in San Antonio?
It's best to start cool-season vegetables indoors in August and transplant them after the hottest period passes to avoid heat stress.
How often should I water raised beds and containers in August?
Water daily or as needed to keep soil consistently moist but not soggy, especially during extreme heat.
What are good heat-tolerant crops for August planting?
Okra, southern peas, malabar spinach, and heat-tolerant tomato varieties perform well during San Antonio's hot August.
Should I use shade cloth in August?
Yes, providing shade during peak afternoon sun helps protect young plants and reduces heat stress.
When is the best time to transplant seedlings started indoors in August?
Transplant seedlings outdoors in late August or early September when daytime temperatures begin to cool slightly.
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