Heat Tolerant Seeds

Heat Tolerant Seeds

97 products

    Keep your summer garden growing with heat tolerant seeds from David's Garden Seeds®. Choosing varieties suited to your climate is an important first step toward a productive hot-weather garden. Explore this collection and check each listing for the crop's planting season, maturity time and specific growing needs.

    Plan for Summer Growing

    • Choose for your conditions: Heat tolerance varies by crop and variety. Consider daytime temperatures, warm nights, humidity and the length of your growing season before planting.
    • Understand the difference: Heat tolerant does not mean drought-proof. Even warm-weather crops need adequate moisture, particularly during germination, establishment, flowering and fruit development.
    • Set realistic expectations: Prolonged extreme heat can reduce germination, pollination and fruit set, even on plants that normally grow well in summer.
    • Know your crop: Bolting depends on the plant, variety, day length and growing conditions. There is no single temperature at which all vegetables go to seed.

    Hot-Weather Planting Tips

    • Time your planting: Follow the variety's sowing instructions and your local planting calendar. Allow enough time for plants to establish before the harshest heat when practical.
    • Prepare the soil: Use well-drained soil with appropriate organic matter. Sow at the recommended depth and keep the seedbed evenly moist without waterlogging it.
    • Water at the roots: Check soil moisture regularly and water deeply as needed. Containers and raised beds may dry out faster than in-ground gardens.
    • Mulch thoughtfully: After seedlings establish, mulch can help conserve moisture and moderate soil temperatures. Keep it away from plant stems.
    • Reduce unnecessary stress: Space plants for airflow, manage weeds and avoid excessive fertilizer. Temporary afternoon shade may help sensitive crops during severe heat, but match shade to the crop's light requirements.
    • Harvest regularly: Pick vegetables at their recommended stage and monitor plants for pests and heat stress throughout the season.

    Why Choose David's Garden Seeds®?

    • Veteran-Owned: Supplying gardeners with seeds since 2009.
    • GO TEXAN Certified: Supporting local agriculture and communities.
    • Integrity Pledge: David's Garden Seeds has taken the Seed Integrity Pledge.
    • Helpful Customer Service: We're here to help you find information for your garden.

    Plan Your Summer Garden Today

    Choose heat tolerant seeds suited to your growing conditions and give your summer garden a strong start.

    Grow something beautiful. Grow something delicious. Grow with David's Garden Seeds®.

    97 products
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    Tomato Cherry Indeterminate Supersweet 100 - 10 Non-GMO, Hybrid Seeds
    David's Garden Seeds®
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    Flower Zinnia Mixed Color California Giants 1000 Non-GMO, Heirloom Seeds
    David's Garden Seeds®
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    Tomato Slicing Determinate Celebrity Plus 10 Non-GMO, Hybrid Seeds
    David's Garden Seeds®
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    Illustration of whole and sliced Clemson Spineless Perfection okra on a wooden cutting board
    Okra Clemson Spineless Perfection 200 Non-GMO, Heirloom Seeds
    David's Garden Seeds®
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    Whole and lengthwise-cut San Marzano paste tomatoes on a cutting board
    Tomato Paste Roma Indeterminate San Marzano 100 Non-GMO, Heirloom Seeds
    David's Garden Seeds®
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    A close-up of fresh Southern Pea Bush Pinkeye Purplehull seeds, showing the cream-colored seeds with purple or pink eyes, and green pods with purple markings.
    Southern Pea Bush Pinkeye Purplehull BVR 200 Non-GMO, Heirloom Seeds
    David's Garden Seeds®
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    David's Garden Seeds®
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    Tomato Beefsteak Determinate Tycoon 10 Non-GMO, Hybrid Seeds
    David's Garden Seeds®
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    Tomato Cherry Rainbow Mix Determinate and Indeterminate 100 Non-GMO, Heirloom Seeds
    David's Garden Seeds®
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    David's Garden Seeds®
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    Herb Borage 500 Non-GMO, Heirloom Seeds
    David's Garden Seeds®
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    Squash Summer Tatume 50 Non-GMO, Heirloom Seeds
    David's Garden Seeds®
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    Arugula Astro is an early, heat-tolerant arugula variety with slightly milder flavor and less deeply lobed leaves compared to regular arugula. This heirloom variety is perfect for gardeners looking for a spice-filled, nutty flavor in their salads or stir-fries. Astro Arugula’s edible flowers add a delightful touch to your dishes, making it a popular choice for brightening up salad mixes. This non-GMO seed variety is easy to grow and ideal for both beginners and experienced gardeners.
    Leafy Greens Arugula Astro 500 Non-GMO, Heirloom Seeds
    David's Garden Seeds®
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    Herb Moringa 20 Non-GMO, Heirloom Seeds
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    Okra Emerald 100 Non-GMO, Heirloom Seeds
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    Tomato Cherry Determinate Gold Nugget 100 Non-GMO, Heirloom Seeds
    David's Garden Seeds®
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    Flower Celosia Flamingo Feather 1000 Non-GMO, Heirloom Seeds
    David's Garden Seeds®
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    Zucchini Tender Grey 100 Non-GMO, Heirloom Seeds
    David's Garden Seeds®
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    Flower Marigold African Crackerjack Mix 500 Non-GMO, Heirloom Seeds
    David's Garden Seeds®
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    Okra Dwarf Long Green Pod 100 Non-GMO, Heirloom Seeds
    David's Garden Seeds®
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    Okra Texas Hill Country Red 100 Non-GMO, Heirloom Seeds
    David's Garden Seeds®
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    Flower Cosmos Sensation Mix 500 Non-GMO, Heirloom Seeds
    David's Garden Seeds®
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    Whole and sliced Red Burgundy okra pods on a wooden cutting board
    Okra Red Burgundy 200 Non-GMO, Heirloom Seeds
    David's Garden Seeds®
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    Flower Zinnia Mixed Color Cactus Mix 500 Non-GMO, Heirloom Seeds
    David's Garden Seeds®
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    David's Garden Seeds®
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    Sunflower Mexican Tithonia 500 Non-GMO, Heirloom Seeds
    David's Garden Seeds®
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    David's Garden Seeds®
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    Okra Cowhorn 100 Non-GMO, Heirloom Seeds
    David's Garden Seeds®
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    David's Garden Seeds®
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    David's Garden Seeds®
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    Flower Zinnia Solid Color Cherry Queen 500 Non-GMO, Heirloom Seeds
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    Long pale green ribbed Armenian cucumbers with cross-cut rounds and a lengthwise half on a wooden cutting board
    Cucumber Slicing Armenian Yard Long 100 Non-GMO, Heirloom Seeds
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    Flower Verbena Moss Mixed Colors 1000 Non-GMO, Heirloom Seeds
    David's Garden Seeds®
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    Flower Zinnia Solid Color Canary Bird 500 Non-GMO, Heirloom Seeds
    David's Garden Seeds®
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    Southern Pea Bush Texas Cream 8 -- 200 Non-GMO, Heirloom Seeds
    David's Garden Seeds®
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