Oklahoma’s July sun is relentless, so selecting vegetables that can handle the scorching temperatures is key. When you search for the best vegetables to plant in july in oklahoma, you need varieties that thrive in heat and humidity. This guide covers exactly what to sow now for a strong late-summer harvest.
July might seem late for planting, but Oklahoma’s long growing season gives you a second chance. Many warm-season crops mature quickly before the first frost. You can still enjoy fresh produce from your garden well into autumn.
Best Vegetables To Plant In July In Oklahoma
This list focuses on heat-tolerant, fast-growing vegetables. These plants handle Oklahoma’s intense sun and sporadic rain. They also resist common pests like squash bugs and aphids.
Heat-Loving Greens For Quick Harvests
Leafy greens often bolt in summer heat. However, certain varieties are bred for hot weather. These provide fresh salads even when temperatures top 90°F.
- Malabar Spinach: This vine loves heat and climbs trellises. Harvest leaves continuously for months. It tastes like regular spinach but stays crisp.
- New Zealand Spinach: Not true spinach, but it thrives in Oklahoma’s July heat. Sow seeds directly and pick young leaves. It grows fast and resists bolting.
- Swiss Chard: Bright stems and dark leaves handle sun well. Plant seeds 1/2 inch deep. Thin seedlings to 6 inches apart. Harvest outer leaves for repeat growth.
- Collard Greens: A Southern staple that loves heat. Sow seeds in rows 18 inches apart. They tolerate light frost, extending your harvest into fall.
Fast-Growing Root Vegetables
Root crops are ideal for July planting. They mature in 50-70 days, giving you time before frost. Soil must stay moist for tender roots.
- Beets: Choose heat-tolerant varieties like ‘Detroit Dark Red’. Soak seeds overnight to speed germination. Thin to 3 inches apart. Harvest when roots are golf-ball size.
- Radishes: The quickest crop from seed to table. Plant every two weeks for continuous harvest. ‘Cherry Belle’ matures in 25 days. Keep soil consistently damp.
- Carrots: Sow seeds shallowly, 1/4 inch deep. Use loose, sandy soil to avoid forked roots. ‘Nantes’ varieties handle heat better. Water regularly to prevent bitterness.
- Turnips: Both roots and greens are edible. ‘Purple Top White Globe’ is reliable. Plant seeds 1/2 inch deep. Thin to 4 inches apart. Harvest roots at 2-3 inches.
Summer Squash And Cucumbers
These vining crops love Oklahoma’s July heat. They produce heavily if given enough water. Watch for powdery mildew in humid conditions.
- Zucchini: Plant 2-3 seeds per hill, spaced 3 feet apart. Thin to strongest seedling. Harvest when 6-8 inches long for best flavor. Check daily for rapid growth.
- Yellow Squash: Similar to zucchini but with curved necks. ‘Early Summer Crookneck’ is a classic. Pick frequently to encourage more fruit. Use row covers to protect from squash bugs.
- Cucumbers: Choose pickling or slicing types. ‘Marketmore’ handles heat well. Plant seeds 1 inch deep. Provide trellis for cleaner fruit. Harvest when dark green and firm.
- Luffa Gourd: Grown for sponges or young fruit. Needs long, hot summer. Plant along fence for support. Harvest mature gourds after vines die back.
Warm-Season Beans And Peas
Beans are heat-tolerant and fix nitrogen in soil. Southern peas thrive in Oklahoma’s climate. Both are easy to grow from seed.
- Bush Beans: ‘Provider’ and ‘Contender’ are heat-resistant. Plant seeds 1 inch deep, 2 inches apart. Harvest when pods are firm but not bulging. Succession plant every 2 weeks.
- Pole Beans: ‘Kentucky Wonder’ climbs trellises. Needs support but yields longer. Plant 6 seeds around each pole. Harvest regularly to extend production.
- Southern Peas: Also called cowpeas or black-eyed peas. ‘Mississippi Silver’ handles heat and drought. Sow seeds 1 inch deep. Harvest pods when they turn yellow.
- Lima Beans: ‘Henderson’ bush type matures in 65 days. Plant after soil warms above 70°F. Harvest when pods are plump and bright green.
Nightshades: Tomatoes, Peppers, Eggplant
July is late for tomatoes from seed, but transplants work. Peppers and eggplant love heat. Choose short-season varieties for best results.
- Tomatoes: Use transplants from nursery. ‘Early Girl’ or ‘Celebrity’ mature in 60-70 days. Plant deep, burying stem to promote roots. Provide shade cloth during extreme heat.
- Peppers: Bell peppers need consistent water. ‘California Wonder’ sets fruit in heat. Plant transplants 18 inches apart. Harvest green or wait for red color.
- Eggplant: ‘Black Beauty’ thrives in hot weather. Plant transplants 24 inches apart. Harvest when skin is glossy and fruit is 4-6 inches. Use floating row cover for flea beetles.
- Okra: A true Oklahoma heat lover. ‘Clemson Spineless’ is standard. Plant seeds 1 inch deep. Harvest pods at 2-3 inches for tenderness. Wear gloves to avoid spines.
Herbs That Flourish In July Heat
Herbs add flavor and attract beneficial insects. Many are drought-tolerant once established. Plant them near vegetables for companion benefits.
- Basil: ‘Genovese’ loves sun and warmth. Pinch flower buds to encourage leaf growth. Plant near tomatoes to repel hornworms. Water at soil level to avoid leaf diseases.
- Dill: Attracts swallowtail caterpillars. Sow seeds directly every 3 weeks. Harvest leaves before flowers open. Let some go to seed for next year.
- Cilantro: Bolts quickly in heat, but ‘Slo-Bolt’ variety lasts longer. Plant in partial shade. Harvest leaves frequently. Seeds (coriander) are also usable.
- Oregano: Perennial that spreads. Plant once and harvest for years. Greek oregano is most flavorful. Cut stems back after flowering to encourage new growth.
Tips For Successful July Planting In Oklahoma
Oklahoma’s July weather is challenging. Follow these steps to give your vegetables the best start.
- Prepare soil well: Add 2-3 inches of compost. Work it into top 6 inches. Test pH; aim for 6.0-7.0. Remove rocks and debris.
- Water deeply and consistently: Use soaker hoses or drip irrigation. Water early morning to reduce evaporation. Aim for 1-2 inches per week. Mulch with straw or grass clippings.
- Provide afternoon shade: Use shade cloth (30-50%) for tender seedlings. Place taller plants like corn or sunflowers on west side. This protects shorter crops from harsh afternoon sun.
- Control pests early: Check leaves daily for aphids, squash bugs, and hornworms. Use neem oil or insecticidal soap. Handpick larger pests. Encourage ladybugs and lacewings.
- Fertilize lightly: Use balanced fertilizer (10-10-10) at planting. Side-dress with compost tea after 3 weeks. Avoid high-nitrogen formulas that promote leaf growth over fruit.
- Succession plant: Sow small amounts every 2-3 weeks. This ensures continuous harvest. Replace spent crops with new seeds. Keep garden productive through September.
Common Mistakes To Avoid
Even experienced gardeners make errors in July heat. Avoid these pitfalls for better yields.
- Planting too deep: Most seeds need shallow planting. Follow package depth. Deep planting delays germination in hot soil.
- Overwatering: Soggy soil causes root rot. Check moisture 1 inch down. Water only when top inch is dry. Use mulch to retain moisture.
- Ignoring soil temperature: Use soil thermometer. Most warm-season crops need soil above 70°F. Cold soil slows growth and invites disease.
- Skipping pest prevention: July pests are active. Use row covers for young plants. Rotate crops yearly to reduce soil-borne diseases.
- Harvesting too late: Vegetables become tough and bitter if left too long. Check daily for peak ripeness. Pick zucchini at 6-8 inches, cucumbers before yellowing.
Regional Considerations For Oklahoma Gardens
Oklahoma spans USDA zones 6a to 8a. Your location affects planting timing. Adjust based on your specific area.
- Eastern Oklahoma: Higher humidity and rainfall. Choose disease-resistant varieties. Watch for fungal issues. Plant in raised beds for better drainage.
- Central Oklahoma: Moderate climate. July temperatures average 93°F. Use shade cloth for afternoon protection. Water deeply twice weekly.
- Western Oklahoma: Drier and hotter. Use drought-tolerant crops like okra and southern peas. Install drip irrigation. Apply heavy mulch to conserve moisture.
- Panhandle: Shortest growing season. Choose early-maturing varieties. Plant by mid-July for fall harvest. Use cold frames to extend season.
Extending Your Harvest Into Fall
July planting leads to fall harvests. Many vegetables improve flavor after light frost. Plan for succession planting through August.
- Plant cool-season crops in August: Broccoli, cauliflower, and kale. Start seeds indoors in July. Transplant in August for fall harvest.
- Use row covers for frost protection: Lightweight fabric adds 4-6°F protection. Extend harvest by 2-4 weeks. Remove covers during warm days.
- Mulch heavily before first frost: Straw or leaves insulate roots. Root crops like carrots store longer in ground. Harvest as needed through early winter.
- Choose frost-tolerant varieties: ‘Walla Walla’ onions and ‘Georgia’ collards handle cold. Check seed catalogs for cold-hardy options.
Frequently Asked Questions
Can I plant tomatoes in July in Oklahoma?
Yes, but use transplants from a nursery. Choose determinate varieties that mature in 60-70 days. Provide afternoon shade and consistent water. You’ll harvest before first frost.
What vegetables grow fastest in Oklahoma’s July heat?
Radishes mature in 25 days. Bush beans produce in 50 days. Summer squash yields in 45-55 days. Malabar spinach grows quickly from seed.
Should I start seeds indoors for July planting?
For most vegetables, direct sow is fine. Heat-loving crops like okra and beans germinate well in warm soil. Only start cool-season crops like broccoli indoors for August transplant.
How often should I water vegetables in July?
Water deeply 2-3 times per week. Provide 1-2 inches total weekly. Increase frequency during heat waves. Check soil moisture daily. Mulch reduces water needs.
What pests are worst for July gardens in Oklahoma?
Squash bugs attack cucurbits. Tomato hornworms defoliate plants. Aphids spread diseases. Use insecticidal soap or neem oil. Handpick larger pests. Encourage beneficial insects.
Final Thoughts On July Planting
Oklahoma’s July garden is challenging but rewarding. The best vegetables to plant in july in oklahoma are heat-tolerant and fast-growing. With proper care, you’ll enjoy fresh produce through fall.
Start with easy crops like okra, southern peas, and summer squash. Add Malabar spinach and Swiss chard for greens. Experiment with short-season tomatoes and peppers from transplants.
Remember to water deeply, mulch well, and monitor pests. Succession planting keeps your garden productive. Each week brings new opportunities to sow and harvest.
Your July garden can be a source of pride and food. Embrace the heat and grow vegetables that thrive in it. Oklahoma’s long growing season is a gift—use it wisely.
With careful planning, you’ll have a bountiful harvest. Enjoy the process and the flavors of homegrown produce. Happy planting in your Oklahoma garden this July.