July Is the Perfect Time to Start Fall Crops – Sow These 7 Vegetable Seeds Now to Keep the Harvests Coming
It's hard to think about fall crops when we're baking under extreme heat, but planning and planting these veggies should be done in July.
Did you think the time to sow seeds for veggies was long over for this year? Many gardeners make that assumption, but there are several crops you can sow in July for a fall harvest. This is one of the best times to get a second round of vegetables for the season. The warm soil speeds germination, while the cooler temps of early fall are ideal for many crops.
A harvest of fall vegetables requires careful selection. Now is the time to sow seeds for quick-growing and cool-season veggies. Sowing now allows plenty of time for both options to grow into bountiful fall harvests.
Here are some of the best options for summer seed sowing and pro tips to help you get the most out of them.
1. Radishes
Radishes are among the fastest and most forgiving of all vegetables to grow. Depending on the variety, they can go from seeds to harvest in 25 to 40 days. You can probably get a few additional radish harvests this year if you start now. The later rounds will be even sweeter and crisper, as they develop and grow in cooler weather.
Sow radish seeds in beds, raised beds, or containers, as long as they are at least six inches (15 cm) deep. It’s important to keep the soil consistently moist as they grow to avoid cracked roots. If your July is very hot, wait until the end of the month to sow radish seeds. Find a wide variety of radish seeds from Burpee and try a few unique types you might have never tried before like Martha Washington's 'Early Scarlet Globe' radishes or watermelon radishes!
2. Carrots
Here’s another great root to start now for your fall harvest. Carrots started now will mature just as the first frosts of the season hit. This hit of cool triggers the starches in the roots to turn into sugars, giving you a very sweet fall crop. Carrots mature in 70 or 80 days. Park Seed offers a great selection of carrot seeds that will make a great addition to your veggie garden.
Raised beds are best for carrots, so they can develop full roots in good soil that is free of rocks. You don’t want to transplant them, so place the seeds where you want the carrots to grow. Keep the soil moist and thin the seedlings as they develop.
Sign up for the Gardening Know How newsletter today and receive a free copy of our e-book "How to Grow Delicious Tomatoes".
3. Beets
Yet another tasty root for fall harvests, beets can be sown now in the heat of midsummer and harvested between 50 and 70 days later, depending on the variety. They grow and develop best as the weather begins to cool. You can use raised beds, garden beds, or big containers to grow beets.
Thinning seedlings is particularly important for beets. Overcrowding interferes with root development. Make sure the soil stays consistently moist, or you risk woody roots. While waiting for the roots to mature, you can harvest and eat the greens. Burpee has some great heirloom beet seeds available including the unique and beautiful Chioggia beet!
4. Bush Beans
Bush beans are an example of a quick-growing veggie you can sow in July. They won’t do well in cold fall weather, but if you start now, you’ll get a good harvest before the first frost. Keep harvesting the beans as they develop to encourage ongoing production.
Bush beans germinate well in warm soil, and they grow fast, maturing in 50 to 60 days. You can grow bush beans in beds or in large containers as long as you can keep the soil moist. It’s especially important to water deeply while the plant is flowering. Heirloom Blue Lake bush bean seeds from Mountain Valley Seed Company on Amazon are high-yield and great for home gardens.
5. Kale
Kale is one of the most iconic of fall veggies. It can grow well into fall and even early winter, depending on your location and climate. While greens are known for being a little tough and bitter, kale sweetens nicely as it matures in cold weather and especially after a frost. Grow it in beds or large pots.
If you’re sowing seeds for baby kale, you can start harvesting after about 30 days. Botanical Interests has Red Russian kale baby greens seeds that are ready in 25 days! For mature kale, you’ll need 55 to 70 days. Keep harvesting the outer leaves as the kale grows. Keep soil moist and use mulch if necessary.
6. Spinach
Spinach also thrives in the cool weather of fall, and it grows fast, maturing in 35 to 50 days. You can harvest baby spinach in as little as 20 to 25 days. Because it’s such a fast grower, sow seeds every one to two weeks for regular fall harvests.
The heat of July can be a little tough on spinach, so start with varieties that don’t bolt readily and keep seedlings shaded in hot weather. Bloomsdale long-standing (bolt-resistant) spinach seeds can be found at True Leaf Market. Water regularly to keep the soil moist and cooler.
7. Brassicas
All of your brassicas can be planted now, including kale of course, but also broccoli, Brussels sprouts, cabbage, and cauliflower. They take between 80 and 100 days to mature, depending on type and variety.
The brassicas thrive in cooler weather, but they might need some help staying cool if your July and August weather is too hot. Keep the soil moist, use mulch, and use shade cloths as needed. Another option is to sow these seeds indoors now and transplant them outside when the weather has cooled a little.
Pro Tips for Maximizing Your Fall Harvest
Master gardeners get more out of their fall harvest with succession planting. Sow seeds every week or two instead of all at once. This staggers and extends your harvest time.
Sowing seeds in the heat of summer can be risky. Keep the soil moist and use a light mulch to keep it cooler. Consider using a shade cloth during particularly bad heat waves. Pull weeds as seedlings sprout and thin out crowded seedlings.
At the other extreme, if you get a cold snap in fall, use row covers to protect the more delicate vegetables. For most of these crops, a light frost actually enhances the flavor.
July isn’t the end of your growing season. For many fall crops, it’s just the beginning. Sow fast-growing, cool-weather plants now for fresh produce and an extended harvest this season.

Mary Ellen Ellis has been gardening for over 20 years. With degrees in Chemistry and Biology, Mary Ellen's specialties are flowers, native plants, and herbs.