7 Best Vegetables To Plant In August

August might feel like summer’s winding down, but in the veggie patch, it’s prime time to sow for fall harvests. The soil is still warm, which helps seeds sprout fast, and many plants thrive as the heat tapers off.

If you’ve been wondering what to plant before cooler days arrive, these are the 7 Best Vegetables To Plant In August.

#1 Lettuce

Lettuce grows best in cooler weather, which makes August a smart time to sow. Choose heat-tolerant varieties like Romaine or Butterhead for late summer planting. Loose-leaf lettuces also mature quickly — often in just 30 days.

#2 Radishes

Radishes mature fast, often in under a month, making them perfect for quick August planting. They prefer moist soil and cooler temps, which help produce crisp, non-spicy roots. Try planting in partial shade if your afternoons are still hot.

#3 Beets

Beets thrive in late summer soil warmth but grow sweeter as the days cool. The roots and greens are both edible, and they store well into winter. Direct sow into loose soil for best shape.

#4 Kale

Kale tolerates heat but improves in flavor with cold. By planting in August, you’ll get tender baby leaves quickly and full heads by fall. It’s a good leafy green for urban containers or small gardens.

#5 Carrots

Carrots need time to mature, so August planting is ideal for a late autumn harvest. Use a deep container or soft garden bed to help them grow long and straight. Water deeply and keep soil consistently moist for best results.

#6 Spinach

Spinach prefers cooler conditions, and late August sowing avoids summer bolting. Choose semi-savoy or smooth-leaf types for faster growth. It’s also great for balcony gardens — check out our guide to patio-friendly vegetables.

#7 Swiss Chard

Swiss chard grows well in warm and cool temps, making it one of the most versatile greens. It tolerates light frost, giving you colorful harvests well into fall. Bonus: the stems are beautiful and edible.

Keep Your Garden Growing

Even in late summer, your garden has so much potential. Start small, stay consistent, and don’t be afraid to try new greens or root veggies. For more fall-friendly ideas, check out our vegetable-in-pots roundup.

FAQ

Can I still plant vegetables in August?
Yes! Many fast-growing or cool-season crops like radishes, lettuce, and kale thrive when planted in August’s warm soil.

What vegetables grow quickly in August?
Radishes, spinach, and loose-leaf lettuces grow quickly and are ideal for short growing windows before the first frost.

Should I use compost when planting in late summer?
Definitely. Enriching your soil helps crops grow strong as the days shorten. Learn how to make your own with our balcony compost guide.