By Gray Day Flower Farm
When most people think of July, they picture tomatoes ripening, flowers blooming, and long evenings spent watering the garden. But seasoned gardeners know a little secret…
July isn’t the end of the gardening season—it’s the beginning of the next one.
Here in Southwest Idaho, our hot summers and long growing season give us the perfect opportunity to grow a second harvest. While everyone else is winding down their gardens, we’re quietly planting the vegetables that will feed our families well into autumn.
Why Plant in July?
Our average first fall frost doesn’t usually arrive until mid-October, giving us roughly 80–100 frost-free days after mid-July. Many cool-season vegetables actually grow better as temperatures begin to cool in late summer.
Seeds planted now germinate quickly in warm soil, then mature as the weather becomes milder—a combination that produces sweeter carrots, crisper lettuce, and some of the best broccoli you’ll ever grow.
It’s one of my favorite seasons in the garden.
What to Plant This Month
Direct Sow
These crops do best when planted directly into the garden:
- Carrots
- Beets
- Bush beans
- Swiss chard
- Turnips
- Rutabagas
- Kohlrabi
- Radishes (late July)
- Green onions
Start Indoors or Purchase Transplants
These crops appreciate getting a head start:
- Broccoli
- Cauliflower
- Cabbage
- Brussels sprouts
- Kale
- Collards
By the time these plants are ready for the garden, the intense summer heat will begin to ease.
Don’t Forget the Greens
Toward the end of July, begin sowing:
- Leaf lettuce
- Spinach (best in early August if temperatures stay above 90°F)
- Arugula
- Asian greens
- Bok choy
- Mustard greens
A little afternoon shade or shade cloth can make all the difference during hot weather.
Tips for Success
Water Deeply
Warm soil dries quickly. Keep seed beds consistently moist until seedlings emerge. A light watering once or twice a day may be necessary during germination.
Add Compost
Before planting, mix a layer of finished compost into your beds. Summer crops have already used many of the available nutrients, and your fall vegetables will appreciate the fresh boost.
Mulch Matters
After seedlings are established, add a layer of straw or shredded leaves to help regulate soil temperature and conserve moisture.
Protect Young Seedlings
The July sun can be intense. Shade cloth, lightweight row cover, or even temporary afternoon shade can dramatically improve germination and early growth.
Don’t Pull Everything Out
Many summer vegetables are still producing.
Leave your tomatoes, peppers, squash, and cucumbers growing while planting your fall crops anywhere space becomes available. As spring crops finish, simply tuck new seedlings into those openings.
This keeps your garden producing continuously instead of all at once.
A Few July Garden Chores
While you’re planning for fall, don’t forget to:
- Harvest vegetables regularly.
- Deadhead flowers to encourage more blooms.
- Fertilize heavy feeders like tomatoes.
- Continue deep watering.
- Watch for squash bugs, aphids, tomato hornworms, and spider mites.
- Keep weeds from stealing valuable moisture.
A little attention now pays off with healthier plants through the rest of summer.
Looking Ahead
Gardening isn’t about one big harvest—it’s about creating a rhythm throughout the seasons.
Planting a fall garden in July means you’ll still be harvesting fresh vegetables long after many gardens have finished for the year. There is something incredibly satisfying about gathering crisp carrots, sweet kale, and fresh broccoli on cool autumn mornings.
So while the summer sun is shining, don’t think your gardening season is ending.
It’s only just beginning again.
At Gray Day Flower Farm, we believe every season has something beautiful to offer. Start small, grow slowly, and enjoy every harvest along the way.
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