by Steve Glor on Sep 08, 2025

Heat-Proof Plants: Best Drought-Tolerant Flowers and Veggies for August

August can be rough on a garden. The sun beats down, rain gets scarce, and by mid-month, even the toughest plants can look tired. But here’s the good news: late summer doesn’t have to mean crispy flowers and wilted veggies. With the right drought-tolerant plants and a few smart care tricks, your garden can still be bursting with color, flavor, and life.

I’ve been gardening long enough to know that August is when you need to let the toughest players take the field. Think of it like calling in the all-stars, plants that laugh in the face of heat and keep on thriving even when the watering can feels like it’s working overtime.

Let’s walk through the best flowers and veggies to plant (or keep nurturing) this month, plus some tips and tools that will make your late-summer gardening a whole lot easier.

Why August Gardens Need Heat-Proof Plants

By the time August rolls around, soil moisture is low, temperatures are high, and evaporation happens fast. If you’re not careful, you can spend hours watering only to see your plants droop again the next day. That’s why drought-tolerant plants are the heroes of late summer. They conserve water, thrive in full sun, and still give you plenty of blooms or harvests.

Even better? Once established, many of these plants actually prefer the heat. They’ll keep your garden lively when everything else looks fried.

Top Drought-Tolerant Flowers That Thrive in August

Zinnias

Zinnias are the ultimate “set it and forget it” flower. Once planted, they love the sun, handle dry soil, and bloom nonstop until frost. Plus, they come in every color you can imagine. Plant them in borders, pots, or even between your veggies for a splash of cheer.

Marigolds

Marigolds are a classic for a reason. They’re pest-resistant, heat-loving, and add a golden glow to any garden bed. Bonus: their strong scent naturally deters mosquitoes and some garden pests.

Coneflowers (Echinacea)

Coneflowers are tough prairie natives that practically thrive on neglect. They can handle poor soil, drought, and blazing sun—all while attracting bees and butterflies. Cut a few for a vase indoors, and they’ll keep producing more.

Lantana

If you want butterflies flocking to your yard, plant lantana. This hardy shrub-like flower thrives in containers or ground beds, tolerates heat like a champ, and rewards you with clusters of vibrant blooms.

Pro tip:

When planting flowers in August, it helps to prep your soil well. I like using the Yard Butler Terra Tiller. Its double head makes it easy to loosen up compacted, dry dirt and work in a little compost before planting.

Best Heat-Resistant Vegetables for Late Summer

Okra

Okra isn’t just a Southern favorite—it’s also one of the most heat-tolerant veggies around. Once it gets going, you’ll be harvesting pods daily.

Eggplant

August eggplant thrive in heat

Eggplant thrives in long, hot summers. It needs sun and lots of it. If you’ve never tried growing the smaller varieties (like Fairy Tale or Patio Baby), give them a shot—they’re perfect for containers.

Peppers

Hot peppers and sweet peppers both love August heat. In fact, peppers often taste better when they ripen in hot, dry conditions. They’re also surprisingly low-maintenance once established.

Swiss Chard

Unlike lettuce (which bolts in the heat), Swiss chard holds steady all summer long. It’s colorful, tasty, and can even be cut-and-come-again, so one planting lasts you months.

To keep veggies thriving in August, consistency is key. Deep watering every few days beats shallow watering every day. I use the Yard Butler Deluxe Garden Hose Hanger to keep my hose neat and untangled, so I can quickly drag it out for a solid soak session. Small thing, big time-saver.

Gardening Tips to Keep Plants Thriving in Extreme Heat

  • Water deep, not often. Early mornings are best—water at the base of plants to avoid evaporation.
  • Mulch, mulch, mulch. A 2–3 inch layer of mulch keeps soil cooler and reduces evaporation.
  • Give some shade. Even sun-loving plants appreciate a little break. A shade cloth or strategically placed taller plant can help.
  • Use the right tools. The Yard Butler Garden Kneeler and Seat is a back-saver when you’re out in the sun tending to plants. And for soil that’s packed tight from summer heat, the Yard Butler Twist Tiller makes quick work of aerating before you water.

Designing a Drought-Tolerant August Garden

drip watering for August gardening in the heat

August gardens don’t have to look tired. With the right mix of plants, they can be full of energy:

  • Mix flowers and veggies. Plant zinnias alongside peppers for a colorful, practical garden.
  • Think containers. Lantana or eggplants in pots bring life to patios, and you can move them to chase or avoid sun as needed.
  • Go pollinator-friendly. Coneflowers and lantana will draw butterflies, bees, and hummingbirds to your yard.

If you’re gardening in smaller spaces, raised beds and vertical gardening tools (like the Yard Tree Hanging Garden) help you maximize what you’ve got.

Final Thoughts: Grow Strong, Even in the Heat

August gardening is about resilience for both you and your plants. The key is choosing the right flowers and veggies that can stand tall in the heat while giving you beauty and harvests well into fall.

With a few drought-tolerant all-stars in the ground, some smart watering habits, and reliable tools to make the work easier, your garden will not only survive August it’ll thrive.

So, grab your hose, mulch those beds, and let your zinnias, peppers, and lantanas show the sun who’s boss.