As the summer season winds down, many gardeners might think it’s time to wrap up their gardening efforts for the year.
However, September is actually an excellent time to plant a new crop of vegetables for a fall harvest.
Whether you’re aiming for a bountiful autumn yield or looking to extend your gardening season, here are 12 veggies you can start in September right now.
Why September Is Perfect for Planting
As the summer heat fades, September provides an opportunity for gardeners to extend their growing season.
Cooler temperatures, more consistent rainfall, and fewer insect pests create excellent conditions for cool-weather vegetables.
- Soil Advantage: Warm summer soil speeds germination, while cooler nights reduce plant stress.
- Flavor Benefit: Many vegetables, especially root crops and leafy greens, become sweeter and more tender after a light frost.
- Extended Harvest: With row covers, mulch, and cold frames, many September-planted crops can be harvested into late fall – or even through winter in milder climates.
1. Spinach
Why Plant It in September?
Spinach is a fast-growing leafy green that thrives in cooler weather, making it perfect for a September planting.
It can be harvested within 4-6 weeks, allowing you to enjoy fresh greens well into the fall.
How to Grow
- Planting Time: Direct sow every 2 weeks in September for succession crops.
- Spacing: 1 inch apart in rows 12 inches wide. Thin to 4–6 inches.
- Soil: Fertile, loamy soil with plenty of compost.
- Watering: Needs consistent moisture.
Harvest & Storage
- Begin cutting outer leaves in 30–45 days.
- Store unwashed leaves in a bag in the fridge for up to 10 days.
Tip: Mulch spinach heavily in late fall – you’ll often get a fresh flush of growth in spring.
2. Lettuce
Why Plant It in September?
Lettuce is another cool-season crop that grows quickly and can be harvested in a matter of weeks.
There are many varieties to choose from, including romaine, butterhead, and leaf lettuce, all of which are ideal for fall planting.
How to Grow
- Planting Time: Direct sow seeds or use transplants.
- Spacing: 6–12 inches apart depending on variety.
- Watering: Keep soil evenly moist to avoid bitterness.
- Light: Partial shade helps in warmer zones.
Harvest & Storage
- Baby greens ready in 3–4 weeks; heads in 6–8 weeks.
- Store in crisper drawer wrapped in a damp towel.
Tip: Stagger plantings every 10 days for a non-stop supply.
3. Radishes
Why Plant It in September?
Radishes are one of the quickest-growing vegetables, maturing in as little as 20-30 days. They thrive in the cooler temperatures of fall, producing crisp, spicy roots that are perfect for salads.
How to Grow
- Planting Time: Sow weekly until mid-October in mild climates.
- Soil: Loose, rock-free soil.
- Spacing: Thin to 2 inches apart.
- Water: Keep soil moist for tender roots.
Harvest
- Ready in 20–30 days.
- Harvest promptly – overgrown roots turn woody.
Tip: Plant daikon or winter radishes in early September for storage through winter.
4. Carrots
Why Plant It in September?
Carrots are a versatile root vegetable that grows well in cooler weather. Planting in September allows them to mature in the mild temperatures of fall, which often enhances their sweetness.
How to Grow
- Planting Time: Early to mid-September (longer season varieties need earlier sowing).
- Soil: Deep, loose, stone-free.
- Spacing: 2–3 inches apart.
- Moisture: Essential for germination.
Harvest & Storage
- Pull at 60–80 days.
- Store in damp sand or sawdust in a cool cellar.
Tip: Cover with 6–8 inches of mulch and harvest straight from the ground all winter.
5. Beets
Why Plant It in September?
Beets are a dual-purpose crop, providing both edible roots and nutritious greens. They grow well in cooler temperatures, making them an excellent choice for a fall garden.
How to Grow
- Spacing: Thin seedlings to 3–4 inches.
- Soil: Loose, well-drained with added compost.
- Water: Keep consistently moist for tender roots.
Harvest & Storage
- Baby beets in 40 days, full size in 60.
- Store roots in a root cellar for 2–4 months.
Tip: Harvest greens lightly while roots mature.
6. Turnips
Why Plant It in September?
Turnips are a hardy root vegetable that matures quickly, making them ideal for a fall planting. Both the roots and greens are edible, providing a versatile addition to your garden.
How to Grow
- Spacing: Thin to 4 inches.
- Soil: Loose, well-drained.
- Harvest: Baby turnips at 30 days; full roots in 50.
Tip: Eat fresh or mash like potatoes for a hearty fall dish.
7. Kale
Why Plant It in September?
Kale is a nutrient-packed leafy green that actually tastes better after a light frost, which enhances its sweetness.
Planting in September will provide a steady supply of fresh greens throughout the fall.
How to Grow
- Spacing: 12–18 inches.
- Light: Full sun to partial shade.
- Water: Deep watering encourages sturdy growth.
Harvest & Storage
- Begin picking leaves at 45–60 days.
- Store washed leaves in sealed bags for up to 2 weeks.
Tip: Protect with row covers to prevent cabbage worms.
8. Swiss Chard
Why Plant It in September?
Swiss chard is a resilient green that can be harvested well into the fall and even winter in milder climates. It’s also a great substitute for spinach, with similar culinary uses.
How to Grow
- Planting Time: Sow ½ inch deep.
- Spacing: Thin to 12 inches.
- Harvest: Cut outer leaves continuously.
Tip: Stems are edible too – use them like celery.
9. Collard Greens
Why Plant It in September?
Collard greens are a staple of Southern cooking and grow best in cooler temperatures. They are cold-hardy and can continue producing leaves even after the first frost.
How to Grow
- Spacing: 18–24 inches.
- Soil: Rich in organic matter.
- Harvest: Pick outer leaves, or whole plant at 60–80 days.
Tip: Mulch heavily to extend harvest into early winter.
10. Garlic
Why Plant It in September?
Garlic is typically planted in the fall and harvested the following summer. Planting garlic in September allows it to establish roots before winter, ensuring a robust harvest next year.
How to Grow
- Planting: Separate bulbs into cloves. Plant 2 inches deep, 6 inches apart.
- Mulch: 4–6 inches of straw or leaves protects over winter.
Harvest
-
Harvest next summer when tops yellow.
Tip: Save largest cloves for replanting – this improves your crop year after year.
11. Broccoli
Why Plant It in September?
Broccoli is a cool-weather crop that can be planted in September for a fall harvest. It’s frost-tolerant and can be harvested well into the colder months.
How to Grow
- Transplanting: Use seedlings for quicker harvest.
- Spacing: 18–24 inches.
- Soil: Rich in nitrogen.
Harvest
-
Cut central head before florets open. Side shoots keep producing.
Tip: Blanch and freeze broccoli florets for winter meals.
12. Cauliflower
Why Plant It in September?
Like broccoli, cauliflower thrives in cool weather and can be planted in September for a late fall harvest. It requires a bit more care but is well worth the effort.
How to Grow
- Transplanting: Start indoors, then move to garden.
- Spacing: 18–24 inches.
- Blanching: Fold leaves over heads to keep them white.
Harvest
-
Ready in 70–90 days.
Tip: Harvest promptly – heads get bitter if left too long.
Extending Your Harvest Into Winter
Planting in September doesn’t mean your season ends with the first frost. With a few simple strategies, you can harvest vegetables well past November:
- Row Covers: Lightweight fabric protects crops from frost and pests.
- Cold Frames: Mini-greenhouses that trap daytime heat.
- Mulch: Insulates root crops like carrots and beets.
- Succession Planting: Keep sowing quick crops like radishes and spinach every 2 weeks.
September is a great time to plant a variety of vegetables that will thrive in the cool, crisp weather of fall.
With proper care and timing, you can enjoy a bountiful harvest of fresh, homegrown produce well into the colder months.
Whether you’re looking to extend your gardening season or start a new crop, these 12 vegetables are perfect for planting right now.
