What to Plant in July: A Zone-by-Zone Guide for US Gardeners

Tomatoes

If you’re in Zones 7–9 with a long growing season ahead, it’s not too late to transplant fast-maturing determinate tomatoes. Varieties like Roma, Ace 55, and Heatmaster are ideal — they’re bred to set fruit even when nighttime temperatures stay high.

In Zones 5–6, your spring-planted tomatoes are producing now, but planting a second round of cherry tomatoes in early July can extend your harvest well into fall.

Cucumbers

Cucumbers thrive in July heat and mature quickly — many varieties are ready in just 50–60 days, which means a July planting gives you cucumbers right through September. Direct sow seeds into warm soil and keep them well watered. Slicing varieties like Poinsett 76 and Tendergreen perform especially well in summer heat.

Beans

Bush beans and pole beans are one of the fastest and most rewarding July plantings. Many varieties mature in as little as 35–50 days, meaning a mid-July sowing gives you fresh beans in late August and September — right as your spring-planted beans start to wind down. Succession sow every two weeks through mid-July for a continuous supply.

Squash & Zucchini

Summer squash grows incredibly fast in July — it’s not unusual to go from seed to harvest in under 50 days. If your spring squash plants are starting to look tired or powdery, pull them out and direct sow a fresh round. You’ll have new, vigorous plants producing in no time.

Winter squash planted in early July (especially in Zones 5–7) will be ready for a fall harvest.

Beets

Beets are a fantastic July crop — they mature in 55–70 days and can handle light frost, which means a July sowing often yields a sweet fall harvest. Detroit Dark Red and Chioggia are reliable varieties. Direct sow seeds about half an inch deep and thin seedlings to 3–4 inches apart for best root development.

Kale

This might surprise you, but kale planted in July actually tastes better than spring-planted kale. That’s because cool fall temperatures — which it grows into after a July start — trigger the plant to convert starches to sugars, producing sweeter, more tender leaves. Red Russian Kale and Bare Necessities Kale are two varieties that handle summer heat well enough to get established before fall kicks in.

Carrots

Carrots planted by mid-July in Zones 3–7 will yield a wonderful late summer and fall crop. They actually prefer to mature in cooler temperatures, which makes a July start ideal — they germinate in the warmth but develop sweetness as fall approaches. Keep the soil consistently moist during germination, as dry surface soil is the number one reason carrot seeds fail.

Okra (Zones 6–11)

Okra is a true Southern summer star and one of the few vegetables that genuinely loves July heat. Direct sow seeds in warm soil — okra germinates best when soil temperatures are above 65°F. In the Deep South and Southwest, July plantings produce abundantly through October.

Sweet Potatoes (Zones 6–9)

If you didn’t plant sweet potato slips in June, early July is your last call. They need 90–120 days of warm weather, so a July planting in Zone 7+ will reach harvest in October. The sprawling vines work wonderfully as an edible groundcover — plant them where you want to suppress weeds and fill space.

Zinnias

Zinnias are one of the best flowers you can direct sow in July. They germinate fast, handle heat beautifully, and bloom prolifically from late summer right up to the first frost. The more you cut them, the more they bloom — making them perfect for summer bouquets. Sow seeds directly into a sunny bed and they’ll surprise you with how quickly they establish.

Sunflowers

Fast-growing sunflower varieties planted in early July will bloom in late August and September, adding incredible height and colour as the rest of the summer garden starts to fade. Choose shorter-season varieties (around 60–70 days) for a July planting. Sunflowers also attract birds once seeds form — a lovely bonus if you have a bird bath or feeder nearby.

Marigolds

Marigolds are one of the hardest-working flowers in the summer garden. Their scent naturally repels aphids and whiteflies, while simultaneously attracting beneficial pollinators. Plant them around tomatoes, beans, and peppers as a companion plant. They establish quickly from transplant and bloom continuously until frost.

Cosmos

Cosmos are airy, romantic, and ridiculously easy from seed. Direct sow in July for blooms in late August that carry all the way through fall. They prefer lean, dry soil — over-fertilising actually reduces flowering. Cosmos self-seed freely, so once you plant them, you’ll have volunteers returning year after year.

Portulaca (Moss Rose)

If you have a hot, dry, sunny spot that kills everything else, portulaca is your answer. This low-growing succulent annual is nearly indestructible in summer heat and produces jewel-bright flowers in coral, yellow, pink, and orange. It thrives in poor soil, requires minimal water, and spreads beautifully as a groundcover.

Dahlias (from Tubers or Transplants)

In cooler zones (3–5), dahlias planted in early July will produce their most spectacular blooms in September — a wonderful way to keep your garden glowing into fall. In Zones 7+, dahlias planted in spring are in full flush right now and will continue blooming if you keep them deadheaded and well watered.