15 Vegetables & Herbs You Should Plant in September

Q: What are the best vegetables to plant in September?

The best options are fast-maturing greens like arugula, spinach, lettuce, mustard greens, and baby bok choy , along with quick roots such as radishes, baby carrots, beets, and turnips . Cold-tolerant crops like kale, Swiss chard, and collards also do well when planted now. Garlic should be planted in September for harvest the following summer.

Q: Is it too late to start a fall garden in my zone?

Not necessarily. The key is to choose crops that can reach maturity within the frost-free window you still have in your zone. Choose vegetables that can mature within that window , and lean on baby greens or small roots if frost is close. In warmer zones, you can plant a wider range of crops into October.

Q: What soil temperatures are best for fall germination?

Most cool-season crops sprout well in soil between 50°F and 70°F . Lettuce, spinach, radish, carrot, and cilantro all prefer these cooler ranges. If daytime soil is warmer, provide light shade or cover rows to keep conditions more stable.

Q: What fertilizer approach works best for September crops?

Refresh beds with 1–2 inches of compost before planting. Leafy greens benefit from a light dose of balanced fertilizer at sowing and one more application midway through the season. Root crops need less nitrogen—too much can cause misshapen roots—so compost alone is often enough.

Q: How should I plan successions in September?

Stagger sowings of fast crops every 7–10 days . Start with radish, arugula, and lettuce, then follow with spinach, mustard greens, and cilantro. In warmer zones, continue sowing into October and transition beds toward overwintering crops like spinach, garlic, and parsley.

Q: Which herbs start well in September, and which should I skip?

Good picks include parsley, cilantro, chives, dill, sage, and thyme —all of which handle fall conditions well and root efficiently in cooling soil. These herbs take advantage of the cool weather to establish strong growth. Skip basil outdoors—it slows dramatically and won’t thrive in short, cool days.

Just because summer’s winding down doesn’t mean your garden has to. In fact, September is one of the most productive months to plant—if you know what to grow. The soil still holds warmth, the air begins to cool, and conditions line up perfectly for fast-growing greens, sweet fall roots, and hardy herbs that love this time of year.

Whether you’re refreshing raised beds, sowing directly into backyard soil, or starting fresh in containers, there’s still plenty of time to plant a second round—with harvests you can enjoy before the first frost, and in some zones, even beyond.

15 Expert-Recommended Vegetables & Herbs to Plant in September:

Below, I’ve highlighted vegetables and herbs that are perfectly suited for September planting, with practical growing advice, zone-based guidance, and clear steps to help you succeed in your fall garden.

1. Spinach (Spinacia oleracea)

Spinach is one of the best leafy greens for fall planting, and September is your golden window to get it started. Unlike summer greens that bolt under heat stress, spinach loves the cooling temperatures of early fall and produces sweet, tender leaves when grown in cooler soil.

Sow spinach seeds directly in the ground, raised beds, or containers. Choose a fast-growing variety like ‘Bloomsdale’ or ‘Space’ if you’re aiming for baby greens before frost. In zones 6 and up, spinach planted in September can also overwinter under row covers and resume growth in early spring.

Expert tip: Pre-soak your spinach seeds in cool water for 6–12 hours before sowing. This jumpstarts germination, especially when soil temperatures are on the warmer side.

Best for: Fall salads, overwintering in mild zones
Zones: 3–9
Harvest Time: 35–50 days
Sun: Full sun to partial shade
Spacing: 2–4 inches apart in rows 12 inches apart

2. Radishes (Raphanus sativus)

If you’re looking for a quick win this month, radishes are unbeatable. Many varieties mature in just 25–35 days, making them perfect for late-season planting even in northern zones. They germinate reliably in cool soil and develop a crisp texture with a mildly spicy flavor.

Direct sow radish seeds in loose, well-draining soil. Keep them evenly moist from the start—radishes that dry out or get water-stressed often split or become pithy. For a colorful fall harvest, try planting ‘Cherry Belle’, ‘French Breakfast’, or a purple-skinned variety like ‘KN-Bravo’.

Expert tip: For best root development, thin seedlings to at least 2 inches apart as soon as the first true leaves appear.

Best for: Fast fall harvests, small space growing
Zones: 3–10
Harvest Time: 25–35 days
Sun: Full sun
Spacing: 1 inch apart, thin to 2 inches

3. Kale (Brassica oleracea var. acephala)

Kale is one of the hardiest leafy greens you can plant in September—and the cooler the weather gets, the sweeter the leaves become. It’s a dependable crop for both fall harvests and overwintering, especially in zones 7 and up with proper mulch or row cover.

You can direct sow or transplant if you’re short on time. For quicker results, use starts from your local nursery. Curly types like ‘Dwarf Blue Curled’ are compact and cold-tolerant, while ‘Lacinato’ (Dinosaur Kale) grows upright and resists pests longer.

Expert tip: Avoid overfeeding young kale plants. A balanced organic fertilizer once at planting is enough—too much nitrogen creates soft, pest-prone foliage.

Best for: Cold-hardy greens, extended harvest
Zones: 3–10
Harvest Time: 50–75 days
Sun: Full sun to partial shade
Spacing: 12–18 inches apart

4. Lettuce (Lactuca sativa)

September is one of the best times to grow lettuce, especially if you’re tired of watching it bolt in summer. Looseleaf and romaine types thrive in cooler weather and can mature in under 30 days.

Choose fast-growing varieties like ‘Black Seeded Simpson’, ‘Buttercrunch’, or ‘Red Sails’. Lettuce needs consistent moisture but not soggy soil—mulch helps a lot here, especially in warmer zones. Sow seeds shallowly and keep them shaded until they sprout.

Expert tip: In hot zones (8–10), sow lettuce in the late afternoon and provide partial shade during germination to prevent heat stress.

Best for: Fall salads, succession planting
Zones: 3–10
Harvest Time: 25–45 days
Sun: Morning sun, afternoon shade in warm zones
Spacing: 4–6 inches apart for baby leaves, 8–10 inches for full heads

5. Turnips (Brassica rapa subsp. rapa)

Turnips planted in early to mid-September produce crisp, flavorful roots and tender greens that can both be harvested within two months. They’re quick, cold-tolerant, and one of the most forgiving root crops to grow in fall.

Direct sow in fertile, well-draining soil and thin seedlings early to ensure proper root development. For smoother texture and fewer pests, aim to harvest when roots are 2–3 inches wide. Varieties like ‘Hakurei’ and ‘Purple Top White Globe’ are excellent fall performers.

Expert tip: Don’t throw out the greens—harvest them young for sautés, soups, or as a spinach substitute.

Best for: Dual-purpose harvest (roots + greens)
Zones: 3–9
Harvest Time: 40–60 days
Sun: Full sun
Spacing: 2–4 inches apart

6. Arugula (Eruca vesicaria)

Few greens respond to cool September weather as quickly as arugula. Its peppery bite and fast growth make it ideal for fall salads, and it’s one of the few greens that can be harvested just 3–4 weeks after sowing.

Sow arugula directly and thin to about 2 inches apart for baby greens. In cooler zones, cover with row fabric for faster germination. Water regularly but avoid soaking—too much moisture can lead to mildew, especially as temperatures drop.

Expert tip: Harvest arugula while the leaves are still small and tender. As the plant matures in cooler temperatures, the flavor sharpens and the texture becomes tougher.

Best for: Fast fall greens, cut-and-come-again salads
Zones: 3–10
Harvest Time: 25–40 days
Sun: Full sun to partial shade
Spacing: 2–3 inches apart

7. Beets (Beta vulgaris)

Beets are a fall workhorse. They germinate in warm soil but size up best as nights cool, which is exactly why planting in September pays off. Direct sow 1/2 inch deep into loose, stone-free soil; clods or compaction will fork roots. Remember each beet ‘seed’ is a cluster—plan to thin. If your first frost is close, target baby beets and greens for a quick, tender harvest.

Expert tip: Pre-sprout beet seed clusters. Soak 12 hours, drain, roll in a damp paper towel inside a ventilated bag for 24–36 hours, then sow—this evens up germination in variable fall temps.

Best for: Fall roots and tender beet greens
Zones: 3–10
Harvest Time: 55–70 days for roots; 30 days for baby greens
Sun: Full sun
Spacing: Thin to 2–3 inches; rows 12–18 inches

8. Bok Choy (Brassica rapa subsp. chinensis)

Pak Choi / Bok Choy (Brassica rapa subsp. chinensis)

Bok choy loves shortening days and cool nights. September sowings produce crisp, juicy stems without the bitter edge you see in heat. For quick returns, choose baby types like ‘Mei Qing Choi’ or ‘Shanghai Green’ and direct sow. Flea beetles can still be active—lightweight row cover from day one prevents shot-hole damage.

Expert tip: In warm zones, float 30% shade cloth during the first 10–14 days. It lowers leaf stress and prevents premature bolting while seedlings establish.

Best for: Fast Asian greens, baby heads
Zones: 4–10
Harvest Time: 30–50 days (baby in 25–30)
Sun: Full sun to light afternoon shade in warm zones
Spacing: 6–8 inches for baby; 10–12 inches for full size

9. Carrots (Daucus carota)

Cool nights concentrate sugars, so fall carrots are often the sweetest you will grow. The key is consistent moisture until emergence. Sow shallowly (1/4 inch), firm the surface, and keep uniformly damp. In arid or windy spots, cover the row with burlap or a board for 3–5 days and check daily; remove as soon as sprouts appear. Nantes and Chantenay types size reliably in fall.

Expert tip: Water lightly twice a day during germination rather than soaking. A surface crust is the number one reason fall carrot seed fails.

Best for: Sweet fall roots, storage carrots
Zones: 3–10
Harvest Time: 60–80 days (baby in 35–45)
Sun: Full sun to light shade
Spacing: Thin to 2 inches; rows 12–18 inches

Related: Carrot Companion Plants

10. Swiss Chard (Beta vulgaris subsp. cicla)

Chard is forgiving and productive when planted now. It handles sudden cold spells with ease and keeps producing after each cut, giving you a reliable supply of greens well into the later weeks of fall. Direct sow or transplant. For continuous picking, start a thick row and thin by eating baby leaves, then let remaining plants mature.

Expert tip: Cut outer leaves at the base and leave the growing point intact. This keeps plants pumping out fresh leaves even after a light frost.

Best for: Cut-and-come-again greens, low-maintenance harvests
Zones: 3–10
Harvest Time: 30–60 days
Sun: Full sun to partial shade
Spacing: 6–8 inches; rows 18 inches

11. Mustard Greens (Brassica juncea)

If you want fast greens for braises and salads, mustard is hard to beat in September. It germinates quickly in warm soil and grows cooler, cleaner leaves as nights drop. Direct sow in bands rather than single rows for dense baby-leaf harvests, or give space for larger, crinkled leaves.

Expert tip: Succession sow every 10 days through mid-October where frost allows. For milder flavor, keep plants well watered and harvest smaller leaves.

Best for: Speedy greens, spicy salad mixes
Zones: 4–10
Harvest Time: 25–40 days (baby in 20–25)
Sun: Full sun to light shade
Spacing: 4–6 inches for full leaves; scatter-sow for baby leaf and thin by harvesting

Also Read: Broccoli Companion Plants (with Chart)

12. Collard Greens (Brassica oleracea var. viridis)

Collards handle the first frosts without issue and often taste better as the weather cools, developing a richer, more mellow flavor. September plantings give sturdy rosettes that you can pick leaf by leaf. They are slower than mustard but more cold-resilient. Mulch well to stabilize soil moisture and reduce splash that spreads disease.

Expert tip: Once the central stalk grows to about 12 to 16 inches, pinch off the top to trigger new side shoots. This helps the plant push out a fresh round of tender collard leaves before the first hard frost arrives.

Best for: Cold-tough greens, extended picking
Zones: 4–10
Harvest Time: 60–85 days
Sun: Full sun
Spacing: 18–24 inches

13. Garlic (Allium sativum) – fall planting

Garlic is planted now for next summer’s harvest, and timing matters. Plant 2–4 weeks before the ground freezes so cloves root without top growth racing ahead. Choose hardneck types in colder zones and softneck in milder areas. Plant only the largest, healthiest cloves from quality bulbs, point up, 2 inches deep in well-drained soil. Water once, then mulch once the soil cools to hold a steady chill.

Expert tip: Space rows wider than you think—8–10 inches—and plan a mid-spring nitrogen boost. Removing hardneck scapes at curl stage redirects energy to bulb size.

Best for: Reliable summer bulbs, scapes (hardneck)
Zones: 3–10
Harvest Time: About 8–9 months (harvest when 3–4 lower leaves brown)
Sun: Full sun
Spacing: 4–6 inches between cloves; rows 8–10 inches

You May Like: Garlic Companion Plants (with Chart)

14. Cilantro (Coriandrum sativum)

Cilantro finally behaves in fall. Cooler nights slow bolting, allowing dense, fragrant foliage for weeks. Direct sow thinly and keep the seedbed evenly moist for even stands. For a steady kitchen supply, sow every 2–3 weeks until a hard freeze. Bolt-resistant strains like ‘Slow Bolt’ buy you extra time, but cool weather is the real secret.

Expert tip: If your winters are mild, mulch lightly and let a patch self-seed. You’ll often get a free round of cilantro right at the start of spring.

Best for: Cool-season leaf harvest, coriander seed if allowed to flower
Zones: 3–10 (overwinters in 8–10)
Harvest Time: 30–45 days for leaves
Sun: Full sun to light afternoon shade in warm zones
Spacing: Thin to 3–4 inches; rows 8–10 inches

15. Parsley (Petroselinum crispum)

Parsley is slow to start but thrives in cool weather and can overwinter with protection in many areas. For faster germination, soak seed 12–24 hours, then sow 1/4 inch deep and keep the surface damp until sprouts appear. Flat-leaf types like ‘Gigante d’Italia’ are vigorous and easier to harvest; curly types hold texture for garnish. In zones 6–9, a straw mulch helps plants cruise through winter.

Expert tip: Cold stratify stubborn seed. Seal dry seed in a bag in the refrigerator for 2 weeks, then soak overnight and sow—this can cut germination time noticeably.

Best for: Fall and overwinter herb, containers
Zones: 4–10 (overwinters best in 6–9)
Harvest Time: 70–90 days (baby sprigs sooner)
Sun: Full sun to partial shade
Spacing: 6–8 inches; rows 12 inches

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FAQs About Vegetables & Herbs to Plant in July

What are the best vegetables to plant in September?

The best options are fast-maturing greens like arugula, spinach, lettuce, mustard greens, and baby bok choy, along with quick roots such as radishes, baby carrots, beets, and turnips. Cold-tolerant crops like kale, Swiss chard, and collards also do well when planted now. Garlic should be planted in September for harvest the following summer.

Is it too late to start a fall garden in my zone?

Not necessarily. The key is to choose crops that can reach maturity within the frost-free window you still have in your zone. Choose vegetables that can mature within that window, and lean on baby greens or small roots if frost is close. In warmer zones, you can plant a wider range of crops into October.

Should I direct sow or use transplants in September?

Direct sow quick crops such as radish, arugula, spinach, lettuce, carrots, beets, turnips, cilantro, and dill. Transplants are better for longer growers like kale, collards, Swiss chard, bok choy, and parsley if you want full-sized harvests before the season ends.

What soil temperatures are best for fall germination?

Most cool-season crops sprout well in soil between 50°F and 70°F. Lettuce, spinach, radish, carrot, and cilantro all prefer these cooler ranges. If daytime soil is warmer, provide light shade or cover rows to keep conditions more stable.

How should I water fall plantings?

Keep seedbeds evenly moist until seedlings emerge, as drying out is the biggest cause of failure. After that, give leafy crops about 1 inch of water per week and root crops slightly more. Containers often need daily checks because fall winds dry them quickly.

What fertilizer approach works best for September crops?

Refresh beds with 1–2 inches of compost before planting. Leafy greens benefit from a light dose of balanced fertilizer at sowing and one more application midway through the season. Root crops need less nitrogen—too much can cause misshapen roots—so compost alone is often enough.

How do I protect crops from early frost?

Row covers, low tunnels, and mulch are the most effective tools. Lightweight row covers protect against light frosts, while low tunnels trap daytime warmth for extra weeks of growth. Mulch helps insulate the soil and keeps roots from heaving in freeze-thaw cycles.

Can I grow a September garden in containers?

Yes. Arugula, lettuce, cilantro, mustard greens, and parsley do well in small pots. Larger crops like kale, Swiss chard, and bok choy need 5-gallon or larger containers. Use a rich, well-draining potting mix and monitor moisture daily.

How should I plan successions in September?

Stagger sowings of fast crops every 7–10 days. Start with radish, arugula, and lettuce, then follow with spinach, mustard greens, and cilantro. In warmer zones, continue sowing into October and transition beds toward overwintering crops like spinach, garlic, and parsley.

Which herbs start well in September, and which should I skip?

Good picks include parsley, cilantro, chives, dill, sage, and thyme—all of which handle fall conditions well and root efficiently in cooling soil. These herbs take advantage of the cool weather to establish strong growth. Skip basil outdoors—it slows dramatically and won’t thrive in short, cool days.

What are the most common mistakes gardeners make in September?

Planting crops too late for them to mature, crowding seedlings instead of thinning, adding too much nitrogen to root crops, neglecting moisture in seedbeds, and failing to provide frost protection are the most common errors. Careful timing, spacing, and protection can make September one of the most rewarding planting months.

Conclusion

As we wrap up this guide on vegetables and herbs to plant in September, I hope you’re walking away with fresh inspiration and a solid plan.

From quick greens like arugula and spinach to sturdy staples like carrots, garlic, and kale, September offers a second chance to grow with confidence.

I’d love to know—what’s going into your fall garden this month?
Or are there specific crops or timing questions you’d like us to cover next?

Drop your thoughts in the comments and let’s keep learning from each other.

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