garden-design

August Planting Guide: What to Grow for Late-Summer Garden Success

Amanda L. Greene

2025-07-20 13:10:30

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August may seem late in the game for planting, but...

late summer garden planting vegetables and flowers

August may seem late in the game for planting, but it’s actually a perfect time to start a second wave of growth in your garden. Whether you’re aiming for a vibrant fall harvest or simply extending your bloom season, the right choices now can bring beauty and bounty well into autumn. Here’s what to plant, why it works, and how to make it thrive even in the late summer heat.

1. Leafy Greens Love the Warm Soil

Think spinach, kale, arugula, and Swiss chard—these quick growers are ideal for August planting in most regions. Warm soil speeds up germination, and as the weather cools in September, the leaves grow sweeter and more tender. Just be sure to water consistently and offer partial shade in extreme heat. Plant a few rows every week to extend your harvest well into fall.

2. Fast-Growing Veggies for a Fall Feast

If you're craving a fall harvest, now's the time to plant radishes, carrots, and bush beans. These crops mature quickly and enjoy the gradually cooling temperatures. Carrots benefit from the chill, becoming sweeter, while beans love the lingering warmth. Focus on varieties with short days to maturity (50-70 days), and keep the soil evenly moist to encourage healthy growth.

3. August Blooms That Keep the Color Coming

Don’t forget your flowers! Zinnias, cosmos, and marigolds are tough enough for August’s heat and will bloom well into the fall. They’re also pollinator magnets—great for your veggie crops. Deadhead regularly and fertilize lightly to keep them going. If you’re in warmer zones, you can also sneak in a few sunflowers or nasturtiums for a late-season burst of joy.