16 Vegetables You Should Plant in August

August might feel like the garden is winding down—but in reality, it’s your chance to keep the momentum going. If your spring crops are fading or you’ve got some empty space in your beds or containers, now’s the time to turn things around.

There are plenty of fast-growing vegetables that love warm soil and will be ready before frost hits. Others can be planted now to settle in and shine once cooler weather rolls in.

In this guide, I’ve pulled together the best vegetables to plant in August—along with zone-specific advice, planting tips, and a few lessons I’ve learned the hard way—so you can confidently make the most of your late-summer garden. Let’s get your August garden growing.

16 Expert-Recommended Vegetables to Plant in August

Below, I’ve handpicked vegetables that don’t just tolerate late-summer planting—they thrive in it. These crops are backed by years of growing experience, tailored to your zone, and perfect for gardeners looking to squeeze the most out of their season.

1. Broccoli (Brassica oleracea var. italica)

If you’ve struggled with broccoli in spring, try it in fall—seriously. August-planted broccoli often forms denser, sweeter heads, and the cooler weather helps reduce bitterness. The plant grows tall with a thick central stalk and wide blue-green leaves. At the center, a tight green dome begins to form—like a miniature forest canopy. If you harvest the main head at the right time, you’ll usually get a flush of smaller side shoots afterward.

How to plant: Start with healthy seedlings that are 6–8 weeks old. Transplant them 18–24″ apart into rich, well-draining soil that gets full sun.

Feeding: Broccoli is a heavy feeder. Work compost or aged manure into the soil before planting, and apply a nitrogen-rich side dressing once heads begin forming.

Harvest tip: Cut the central head while it’s still tight and compact—before the buds start loosening or turning yellow. Leave the plant in place to encourage side shoots.

Best for: Fall harvest with bonus side shoots
Zones: 3–9
Sun: Full sun
Spacing: 18–24″ apart
Harvest in: 60–80 days

Expert Tip: Time your planting so heads mature in cool weather. Count back 70–80 days from your first frost date to find the best transplant window.

2. Carrots (Daucus carota)

Carrots planted in August benefit from warm soil that speeds germination, followed by cool fall nights that enhance their sweetness. They start with fine, feathery foliage, and underneath, the roots slowly thicken into crisp, flavorful taproots. I always recommend choosing a quick-maturing variety like ‘Yaya’ or ‘Napoli’ if you’re working with a short fall window.

How to plant: Sow seeds ¼” deep in loose, stone-free soil. Keep the top layer evenly moist until they sprout—carrots won’t germinate well if the surface dries out.

Feeding: Mix in compost before planting, but avoid fresh manure or high-nitrogen fertilizers, which can cause forking.

Harvest tip: Begin checking around 60 days. Tug gently—if the roots resist, let them size up a little more. For sweetest flavor, harvest after a light frost.

Best for: Sweet fall roots
Zones: 3–8
Sun: Full sun
Spacing: Thin to 2–3″ apart
Harvest in: 60–80 days

Expert Tip: After sowing, lay a wooden board or piece of burlap over the row to trap moisture and improve germination. Remove it as soon as you see the first sprouts.

Related: Best Carrot Companion Plants

3. Kale (Brassica oleracea var. acephala)

Kale is one of the easiest and most rewarding vegetables you can plant in August. It’s cold-hardy, pest-resistant, and actually gets sweeter after frost. Young plants begin with tender leaves and quickly develop into lush green rosettes. I prefer growing both curly and lacinato types for variety in texture and appearance.

How to plant: Direct sow or transplant young seedlings. Space 12–18″ apart in fertile, well-draining soil. Keep the area consistently moist during the first few weeks.

Feeding: Kale loves nitrogen. Add compost or fish emulsion every few weeks to keep it leafy and vigorous.

Harvest tip: Pick outer leaves when they reach hand size, leaving the center to keep producing. You can also harvest entire baby plants in 30 days.

Best for: Long-lasting fall greens
Zones: 3–9
Sun: Full sun to partial shade
Spacing: 12–18″ apart
Harvest in: 30–70 days

Expert Tip: To extend the harvest, mulch around the base and protect from frost with a row cover. You’ll get greens deep into winter in many zones.

4. Lettuce (Lactuca sativa)

August might sound too hot for lettuce, but with the right timing and variety, it’s actually perfect for a late crop. Choose heat-tolerant and fast-growing types like ‘Red Sails’, ‘Black Seeded Simpson’, or butterhead varieties. Lettuce starts with soft, pale green leaves and matures quickly, especially if you’re harvesting as baby greens.

How to plant: Sow shallowly—no more than ¼” deep. Keep soil moist and shaded during germination. Thin to 6–8″ apart once seedlings appear.

Feeding: Lettuce prefers light feeding. Work in compost before planting and top-dress with a balanced fertilizer if needed.

Harvest tip: Pick outer leaves early and often. For full heads, wait 45–55 days depending on variety.

Best for: Quick baby greens and small-space harvests
Zones: 4–10
Sun: Morning sun, afternoon shade in warm zones
Spacing: 6–12″ apart
Harvest in: 30–55 days

Expert Tip: To prevent bitterness in hot zones, sow in partial shade or use a 30% shade cloth to cool the soil during germination.

Must Read: Pepper Companion Plants (with Chart)

5. Arugula (Eruca vesicaria)

If you want fast, flavorful greens this fall, arugula is one of the best vegetables to plant in August. It matures quickly, tolerates cool nights, and delivers a peppery punch that makes salads, sandwiches, and pizzas pop. The leaves grow in a loose rosette and can be harvested in as little as three weeks.

How to plant: Direct sow ¼” deep in moist, well-drained soil. Thin to 2–4″ apart for fuller leaves or leave dense for baby greens.

Feeding: Arugula doesn’t need much. Mix in compost before planting and water regularly to avoid bitterness.

Harvest tip: Harvest outer leaves early or cut entire plants at 3–5″ tall. Successive sowings every 10 days keep your greens coming.

Best for: Quick fall greens with flavor
Zones: 4–10
Sun: Full sun to partial shade
Spacing: 2–4″ apart
Harvest in: 20–40 days

Expert Tip: Arugula bolts quickly in heat. To extend your harvest, grow in partial shade or use shade cloth during hot August afternoons.

6. Spinach (Spinacia oleracea)

Spinach thrives in cool weather, which makes late August the perfect time to sow it for a fall harvest. It grows low to the ground, with smooth or crinkled leaves depending on variety. Spinach sown now can produce well into late fall—and even overwinter in mild zones.

How to plant: Sow seeds ½” deep in rich, loose soil. Keep consistently moist and thin seedlings to 3–4″ apart.

Feeding: Add compost before planting. Use a nitrogen-rich liquid feed once leaves start to develop.

Harvest tip: For baby spinach, harvest at 3–4″ tall. For full-sized leaves, wait 45–50 days. Always cut the outer leaves first to keep the plant producing.

Best for: Fall greens and overwintering crops
Zones: 4–9
Sun: Full sun to part shade
Spacing: 3–4″ apart
Harvest in: 30–50 days

Expert Tip: In Zones 7–9, sow spinach in late August and mulch after the first frost. You’ll get a bonus spring harvest as soon as the soil warms.

Also Read: Garlic Companion Plants (with Chart)

7. Swiss Chard (Beta vulgaris subsp. cicla)

Swiss chard adds color, texture, and reliability to any fall garden. The vibrant stems—ranging from red and yellow to neon pink—make it a showstopper. Chard handles heat better than spinach and tolerates frost, making it one of the best vegetables to plant in August for a continuous fall supply.

How to plant: Sow seeds ½” deep. Thin to 6–8″ apart once seedlings are a few inches tall.

Feeding: Mix compost or worm castings into the soil. Feed monthly with fish emulsion or compost tea for strong leaf growth.

Harvest tip: Cut outer stalks when they reach 8–10″. Keep the central crown intact for continuous harvest.

Best for: Colorful greens from late summer to frost
Zones: 4–10
Sun: Full sun to partial shade
Spacing: 6–8″ apart
Harvest in: 50–60 days

Expert Tip: Grow in raised beds or containers for better drainage, especially if you get heavy August rains.

8. Mustard Greens (Brassica juncea)

If you like bold flavors and fast growth, mustard greens deserve a spot in your August garden. These leafy greens come in a variety of textures—from frilly to smooth—and add a spicy kick to stir-fries and salads. They’re quick to mature and tolerate cooler weather better than lettuce.

How to plant: Sow directly ¼” deep. Thin to 4–6″ apart once they germinate.

Feeding: Prepare beds with compost. Mustard greens benefit from a light side dressing of nitrogen every few weeks.

Harvest tip: Pick young leaves for a mild bite or let them grow for a stronger mustard flavor. Harvest outer leaves to keep the plant going.

Best for: Fast-growing spicy greens
Zones: 5–10
Sun: Full sun to part shade
Spacing: 4–6″ apart
Harvest in: 30–45 days

Expert Tip: Mustard greens can bolt if August is too hot. To delay flowering, provide afternoon shade or sow in late August for a smoother harvest.

9. Beets (Beta vulgaris)

Beets are one of the most forgiving root crops you can plant in August. They grow fast, offer dual harvests (roots and greens), and improve in flavor as nights cool. The young plants produce glossy green tops tinged with red, and below the surface, smooth round roots begin to swell—perfect for roasting, pickling, or juicing.

How to plant: Soak seeds for a few hours, then sow ½” deep in rows. Thin seedlings to 3–4″ apart once they emerge.

Feeding: Mix compost or aged manure into the bed before planting. Beets don’t need much feeding after that unless soil is poor.

Harvest tip: Harvest baby beets at 1.5–2″ for tenderness, or leave them in until full size. Always use the greens—they’re just as nutritious.

Best for: Dual-purpose fall crop (roots + greens)
Zones: 3–10
Sun: Full sun
Spacing: 3–4″ apart
Harvest in: 50–60 days

Expert Tip: For even growth, avoid letting the soil crust. Water consistently and mulch lightly to keep the root zone cool.

10. Turnips (Brassica rapa)

Turnips don’t get the love they deserve, especially in home gardens. Planted in August, they mature quickly and offer both crisp roots and tender, mildly spicy greens. They handle light frosts easily, and the roots actually taste better after a cold snap.

How to plant: Sow directly ½” deep in moist soil. Thin to 3–5″ apart after germination.

Feeding: Turnips appreciate compost-rich soil. Avoid high nitrogen once they’ve germinated—too much leads to big tops and small roots.

Harvest tip: Pull turnips at 2–3″ diameter for the best texture. Don’t wait too long or they’ll get woody.

Best for: Fast root crop with edible greens
Zones: 3–9
Sun: Full sun
Spacing: 3–5″ apart
Harvest in: 40–60 days

Expert Tip: If flea beetles are a problem on your greens, use a floating row cover from day one. You’ll protect both the tops and the roots.

11. Radishes (Raphanus sativus)

Radishes are the ultimate quick-win vegetable for August. They germinate fast, grow faster, and can be harvested in under a month. Perfect for new gardeners or anyone looking to fill in empty spaces between slower-growing crops.

How to plant: Sow seeds ½” deep and 1–2″ apart. Thin only if needed—radishes don’t mind a little crowding in cooler weather.

Feeding: Don’t overfeed. Add compost before planting and let them grow on their own—too much nitrogen leads to leafy tops and small roots.

Harvest tip: Check at 20–25 days. Harvest promptly to avoid spongy or pithy roots.

Best for: Fast filler crops and small spaces
Zones: 3–10
Sun: Full sun
Spacing: 1–2″ apart
Harvest in: 25–35 days

Expert Tip: Use radishes as a companion crop. I often tuck them in around carrots or beets—they germinate fast, mark the row, and are out before the others need room.

12. Cabbage (Brassica oleracea var. capitata)

Cabbage can feel like a spring crop, but fall-grown heads are tighter, sweeter, and less prone to bolting. If you transplant healthy seedlings in early to mid-August, you can harvest solid, heavy heads before frost. The leaves form a tight, round ball over time, and the outer leaves offer great wind protection as the season changes.

How to plant: Transplant 4–6 week old seedlings into fertile soil. Space 18–24″ apart in rows with good airflow.

Feeding: Cabbage is a heavy feeder. Apply compost before planting and side-dress with a nitrogen-rich fertilizer midway through the season.

Harvest tip: Harvest when heads are firm to the touch and fully formed. Don’t wait too long—split heads signal you’re past the prime.

Best for: Dense fall harvest and storage
Zones: 3–9
Sun: Full sun
Spacing: 18–24″ apart
Harvest in: 70–90 days

Expert Tip: To prevent cabbage worms, cover with insect netting or use a BT-based spray. Inspect leaves weekly for eggs or chewing.

13. Cauliflower (Brassica oleracea var. botrytis)

Cauliflower is a cool-weather crop that really performs in fall. When planted in August, it gets the warm start it needs and then matures into a clean, compact head as nights cool. The large outer leaves wrap around the center, shielding it from sun and pests. With the right timing, you’ll harvest smooth, white heads perfect for roasting or ricing.

How to plant: Transplant healthy seedlings (4–6 weeks old) into compost-rich soil. Space 18–24″ apart in rows with good drainage and airflow.

Feeding: Cauliflower is sensitive to nutrient imbalances. Mix in compost before planting and apply a balanced organic fertilizer midway through its growth.

Harvest tip: Once the head is firm and 6–8″ wide, cut it cleanly at the base. If the curd starts to loosen or yellow, harvest immediately.

Best for: Dense, tender heads in fall
Zones: 3–8
Sun: Full sun
Spacing: 18–24″ apart
Harvest in: 60–75 days

Expert Tip: For whiter heads, gently tie the outer leaves over the developing curd to block sunlight—a technique known as “blanching.”

You May Like: Broccoli Companion Plants (with Chart)

14. Collard Greens (Brassica oleracea)

Collard Greens (Brassica oleracea var. viridis)

Collards are one of the most dependable leafy greens for late summer planting. They thrive in poor soil, tolerate heat better than kale, and survive frost like champs. Their broad, flat leaves make for a nutritious harvest deep into fall—and even into winter in zones 7 and up.

How to plant: Direct sow in early August or transplant seedlings spaced 18–24″ apart. Water well during the first two weeks to establish strong roots.

Feeding: Enrich soil with compost and apply a side dressing of nitrogen monthly for large, lush leaves.

Harvest tip: Pick the lower leaves first and allow the center to keep growing. You can harvest continually for months if managed properly.

Best for: Long-season greens with frost resistance
Zones: 4–10
Sun: Full sun to partial shade
Spacing: 18–24″ apart
Harvest in: 55–85 days

Expert Tip: After the first fall frost, collard leaves get sweeter and more tender—don’t rush your harvest unless pests are present.

15. Green Onions (Allium fistulosum)

Green onions, also known as scallions, are one of the easiest and most versatile vegetables to plant in August. They don’t mind the late heat, can tolerate light frost, and are ready to harvest quickly. Plus, they’re perfect for container growing and small gardens.

How to plant: Sow seeds ¼” deep in rows or scatter them in wide bands. Thin to 2″ apart once they sprout.

Feeding: Green onions prefer fertile, well-draining soil. Add compost before planting and water consistently to avoid dry, fibrous stalks.

Harvest tip: Harvest when the stalks are the thickness of a pencil. Cut just above the white bulb and they may regrow for a second round.

Best for: Fast-growing, space-saving harvests
Zones: 4–10
Sun: Full sun to partial shade
Spacing: 2″ apart
Harvest in: 50–60 days

Expert Tip: To keep a steady supply, sow a new row every 10 days throughout August. It’s one of the best vegetables to plant in succession for a long harvest window.

16. Bush Beans (Phaseolus vulgaris)

If you’re in Zone 6 or warmer and still have 60 frost-free days ahead, bush beans are one of the best vegetables to plant in August. They germinate fast in warm soil, grow without fuss, and reward you with tender pods in just a few weeks. Unlike pole beans, they don’t need trellising—just sun, water, and a bit of space.

How to plant: Direct sow seeds 1″ deep and 3″ apart in well-drained soil. Thin to 6″ apart once established.

Feeding: Beans fix their own nitrogen, so avoid high-nitrogen fertilizers. Add compost before planting for balanced growth.

Harvest tip: Pick beans young and often to keep plants producing. Once pods swell, the plant slows down.

Best for: Fast harvests in warmer zones
Zones: 6–10
Sun: Full sun
Spacing: 6″ apart
Harvest in: 50–60 days

Expert Tip: To speed germination in August heat, soak bean seeds overnight before sowing and water deeply after planting.

FAQs About Vegetables to Plant in August

Is August too late to start a vegetable garden?

Not at all—August can be a great second chance. If you’re in Zones 5–10, you still have time to grow cool-season crops like lettuce, radishes, spinach, and kale. Many of these vegetables actually perform better as fall crops than in spring. Even in cooler Zones 3–4, you can squeeze in fast-maturing vegetables like green onions or baby carrots.

👉 Still unsure if it’s worth planting? Check your local first frost date and count backward based on the crop’s maturity window—many August vegetables need just 30 to 60 days.

What vegetables grow the fastest in August?

Speed is key when you’re planting this late. Focus on crops that mature in under 60 days:

– Radishes (25–35 days)
– Lettuce (30–45 days)
– Arugula (20–30 days)
– Mustard greens (30–40 days)
– Baby beets (40–50 days)

These are great for staggered harvests, too—plant a new row every 7–10 days for a continuous supply through fall.

👉 Not sure which varieties to choose? Look for ones labeled ‘early’, ‘fast-growing’, or ‘baby’ on seed packets.

Can I grow vegetables in containers in August?

Yes, and in some cases, it’s even better. Containers let you control soil quality and moisture, especially important during hot August days. Leafy greens like lettuce, spinach, and mustard greens grow well in shallow planters. Root crops like radishes and baby carrots thrive in deep pots.

Key container tips for August:

– Choose light-colored pots to prevent overheating
– Water once or twice daily as needed
– Use compost-rich potting mix with good drainage
– Provide shade during extreme heat if you’re in Zones 8–10

👉 Want quick results? Try a shallow window box of arugula or leaf lettuce—you can harvest in just 3 weeks.

What vegetables can survive frost if planted in August?

Several fall vegetables actually improve in taste after a light frost. These are perfect choices for August planting, especially in Zones 3–7:

– Kale
– Carrots
– Turnips
– Collards
– Beets
– Spinach

These crops hold well in the garden even when nighttime temperatures drop into the 30s. In warmer zones, they’ll keep producing for weeks without issue.

👉 To extend the harvest, cover plants with row fabric or low tunnels once frost is in the forecast.

Do I need to fertilize August crops differently than spring ones?

Yes—August crops have less time to grow, so nutrient availability early on is critical. Focus on building soil before planting by mixing in compost or aged manure. For leafy greens, a nitrogen-rich organic fertilizer helps boost early leaf growth. For root crops, avoid too much nitrogen or you’ll get big tops and tiny roots.

👉 Avoid overfeeding, especially with quick growers. A light boost at planting and one mid-season top-up is often enough.

How do I protect seedlings from August heat?

New seedlings are vulnerable to drying out during late summer. Here’s how I keep them alive and thriving:

– Use 30–40% shade cloth to reduce midday stress
– Water lightly every morning until germination
– Mulch once plants are 2–3″ tall to retain moisture
– In hot zones, sow seeds in the evening when the soil starts to cool

👉 For crops like carrots and lettuce, I also use burlap or boards over the soil until germination to keep the top layer moist.

Conclusion

As we wrap up this seasonal guide on what to plant in August, I hope it shifts how you see this time of year. While some gardeners are winding down, you’ve still got time to lean in and grow—especially with the right vegetables and timing on your side.

Whether you’re filling gaps with fast crops like lettuce and radishes or setting the stage for fall champions like broccoli and beets, August gives you a second shot at abundance. The key is to plant with intention, water wisely, and make every remaining day count.

I hope this list helps you take action with confidence and clarity—no matter your zone or experience level.

Now I’d love to hear from you…

What’s going into your garden this August? Are you experimenting with fall crops for the first time—or extending your season like a pro?

Drop your thoughts, questions, or progress in the comments—we’d love to learn from what vegetables you’re growing…

And if you want seasonal planting reminders, zone-specific tips, and fresh growing ideas, subscribe to our gardening newsletter. We’ll keep you one step ahead, every month.

Let’s finish the season strong—together.

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