What to plant this week in San Antonio, TX
San Antonio gardeners are deep in the heart of summer heat, with no last frost worries as your minimum temperature sits comfortably at 20°F historically. This week marks the prime harvest window for an abundance of warm-weather crops like okra, cucumbers, and squash that thrive under our intense Texas sun. Focus on keeping those heavy-yielding plants hydrated while they push out their final bursts of fruit before autumn arrives.
The next 7 days
San Antonio, TXGrowing in San Antonio right now
- Our city's hardpan clay soil often repels water during sudden summer thunderstorms; dig deep to break up compacted layers or use raised beds with organic matter for better root penetration in your vegetable patches.
- The rapid afternoon heat can scorch delicate leaves on newly transplanted zinnias and cosmos, so provide temporary shade cloth until the plants establish deep roots and toughen off.
- Monitor water usage carefully as our rainfall is erratic; rely heavily on drip irrigation to deliver moisture directly to root zones without wasting precious water through evaporation from the hot air.
- With minimal frost risk, you can continue harvesting garlic for storage or replant it now if you want a late fall crop, but do not attempt to transplant cool-season crops that need cold stratification.
Sow this week
2 crops- Daikon Radish
- Ornamental Allium
Transplant this week
Nothing is due to go out this week.
Harvest soon
44 crops- Acorn Squash
- Basil
- Borage
- Bush Bean
- Butternut Squash
- Cantaloupe
- Celosia (Cockscomb)
- Cleome (Spider Flower)
- Cosmos
- Cowpea (Black-Eyed Pea)
- Cucumber
- Delicata Squash
- Edamame
- Fennel
- Flour Corn
- French Marigold
- Garden Verbena
- Garlic
- Gomphrena (Globe Amaranth)
- Gourd (Ornamental/Bottle)
- Honeydew Melon
- Lima Bean
- Loofah (Luffa)
- Malabar Spinach
- Morning Glory
- Nasturtium
- Okra
- Pole Bean
- Pumpkin
- Purslane
- Roselle (Cranberry Hibiscus)
- Scarlet Runner Bean
- Shiso (Japanese Basil)
- Spaghetti Squash
- Summer Savory
- Sunflower
- Sweet Corn
- Thai Basil
- Vinca (Madagascar Periwinkle)
- Watermelon
- Winter Squash
- Yellow Summer Squash
- Zinnia
- Zucchini
Seasonal tips
- Succession sow fast-maturing crops like Daikon Radish or Ornamental Allium to extend your season's variety.
- Mulch around heavy feeders like Okra and Bush Beans to retain moisture as summer heat intensifies.
- Deadhead Zinnias and Cosmos regularly to encourage continuous blooming for pollinators.
Pest & disease watch
- Watch for spider mites on your ornamental alliums and zinnias as the dry, hot air creates perfect conditions for these microscopic pests to explode in numbers.
- Aphids often congregate on the undersides of squash and bean leaves during this heat; inspect daily and blast them off with a strong water spray or apply neem oil if infestations persist.
- Slugs may still be active near the soil line after recent rains, targeting young tomato seedlings or basil plants in shaded corners of your garden.
Watering this week
Water deeply in the early morning to reduce evaporation, especially during hot spells.
Harvest Edamame and Green Beans every two days to keep plants producing their best pods.
San Antonio gardening questions
3Can I plant garlic now for a fall harvest in San Antonio?
Yes, you can sow garlic this week as it is listed for sowing right now; however, ensure the soil temperature remains above 50°F to prevent rot before winter dormancy sets in.
Why are my squash plants wilting during the day even though I water them?
This is likely due to our intense afternoon heat causing transpiration stress rather than a lack of water; mulch heavily around the base and water deeply in the early morning to help roots access moisture before the peak sun.
Are there any cool-season crops I should be starting indoors now?
No, because your last frost date was back on February 6th and minimums rarely drop below 20°F, you have missed the window for cold-hardy starts like lettuce or peas which would freeze in our current zone 9a climate.
Other cities in zone 9a
9See the full zone 9a guide → · Plan your San Antonio garden in SproutGuide →