The 10 best heat-tolerant seeds of 2025

Burpee exclusive. Lettuce that keeps its cool in the heat, remaining productive and tasty longer

Each packet contains 1000 seeds

Sow outdoors in early spring after the average last frost date and harvest in 60 days

Plant Height is 9". plant spread is 6". yields 4" leaves

Annual for all growing zones from 1-11. Sunlight exposure = full-sun

Find over 1000 Burpee vegetable, herb, and flower seeds on Amazon

Get your seeds off to a great start with a Burpee Seed Starting Kit

Burpee, the gardener’s best friend since 1876. Beautiful plants and everything else you need to grow the garden of your dreams from America’s most trusted seed company. No GMOs, ever.

The redesigned Scotts Turf Builder Grass Seed Heat-Tolerant Blue Mix for Tall Fescue Lawns resists extreme heat and features Root-Building Nutrition for a stronger lawn

This grass seed mix is designed for full sun and partial shade, and has medium to high drought resistance with medium to high durability

Use this lawn care product in the spring or fall to seed a new lawn or overseed an existing lawn

Our Root-Building Nutrition formula combines seed, fertilizer, and soil improver to help establish deep roots, allowing you to build a strong, green lawn

One 5.6 lb. bag of Scotts Turf Builder Grass Seed Heat-Tolerant Blue Mix for Tall Fescue Lawns has a new lawn coverage of 465 sq. ft. and an overseeding coverage of 1,400 sq. ft.

Zinnia Elegans are hardy annuals which germinates and establishes quickly to bloom all summer long.

Freshly packed in the U.S. and ready to plant. They prefer full sun and well-drained soil.

This seed mix features pom-pom like blossoms which comes in shades of white, orange, red, purple, pink, and salmon.

Plant 2-3 zinnia flower seeds ¼” in deep every few inches in fertile, well-draining soil in full sun. Once the seedlings have 4 leaves, thin them out to 1 every 8-18” apart. Will grow to 24" in height.

Perfect for the front yard flower border

HEAT TOLERANT LETTUCE & GREENS COLLECTION: This pack is designed for warm climates, featuring a selection of lettuce and greens that thrive in the heat. From crisp lettuces to flavorful mustards and spinaches, these varieties ensure a productive and refreshing harvest even in hot weather.

9 INDIVIDUAL SEED PACKETS: Black Seeded Simpson Lettuce, Cutting Celery, Jericho Romaine Lettuce, Pizzo Mustard, Ruby Red Orach, Galilee Spinach, Wild Arugula, Equinox Spinach, Mizuna Mustard.

THE FRESHEST SEEDS - 2025 SEASON: Elevate your gardening game with our freshest seeds, ensuring high germination rates. Make gardening a joy, where success sprouts effortlessly and blooms into a kaleidoscope of colors.

PREMIUM GIFTABLE PACKAGING: Unwrap gardening delight with our premium seed packaging. Tailored for optimal storage, complete with planting instructions and a reusable zipper – a thoughtful gift for any nature-loving enthusiast.

GUARANTEED TO GROW: Plant with confidence! We stand by our seeds. If they don't germinate, we'll refund you within 30 days, no questions asked. Sweet Yards guarantees a worry-free and flourishing garden.

Characterized by its large, broad, and tender leaves, Florida Broadleaf Mustard is a popular choice for salads, stir-fries, soups, and other culinary applications

✨ QUANTITY - Our Florida Broadleaf Mustard seed pack contains 1500 seeds. With such abundance, your success rate will increase!

🌤️ QUALITY - The seeds are meant for both the current and upcoming growing seasons. They are stored in a temperature-controlled facility that is free of substantial moisture levels.

🌿 PACKAGING - Our seeds are carefully packed in packaging that is resistant to tears and moisture, ensuring their freshness for a longer duration.

🌱 SAFE SEEDS: non-GMO, heirloom, and organic

👩‍🌾SUPPORT LOCAL FARMERS: By purchasing our product, you directly contribute to supporting local organic farmers who are committed to preserving traditional farming methods and protecting the environment.

💬 If the package is damaged, contains an insufficient quantity, or fails to facilitate germination, please contact us for a prompt replacement. If you want customer service where you will talk directly to the owner for any concerns, we are the company for you!

Size at Maturity: 25" Plant | Days to Maturity: 45 Days | Light Requirement: Full Sun/Partial Shade | Planting Time: Cool Season | Sowing Method: Direct Sow | Planting Depth: 1/2" | Plant Spacing: 6" | Hardiness Zones: All

COMPACT & VIBRANT PROLIFIC BLOOMS: Standing at just 8-12 inches tall, our Tagetes Patula Mix French Marigold seed blooms annually and is a versatile addition to your home or garden. Ideal for yards, gardens, containers, or as an indoor houseplant, its compact size ensures it fits elegantly into any space featuring its shades of orange and yellow colored prolific blooms.

LONG BLOOMING & POLLINATOR-FRIENDLY: Blooming continuously from spring through fall, our easy growing flower seeds bring months of vibrant color while attracting bees and butterflies that support garden habitat. Our live marigold plants grows fully by just sowing it 2-3 seeds per plant with 8 inch spacing at 70-75F degrees while covering it lightly to germinate for 5-20 days.

LOW MAINTENANCE & HEAT TOLERANT: Ideal for gardeners of all skill levels, our robust marigold seeds for planting outdoors thrive in full sun using a well-drained moist soil with a pH of (5.6-6.5). Heat-tolerant and easy to grow, they are resilient to hot climates and has the ability to produce lush, vibrant, and colorful displays while requiring minimal care.

FRAGRANT AND DEER PROOF: Immerse yourself in the captivating sensory experience of aromatic foliage complemented by the enchanting fragrance of marigold scent flowers, creating a harmonious blend of visual and delight. Its deer deterring trait ensures your marigold plants live and remain intact while flourishing making it the ideal plant in wildlife prone areas.

VERSATILE AND ADAPTABLE: Our marigolds are great outdoor seeds as they thrive in various weather conditions under USDA Zones 3–10 while also being suitable for indoor sowing. Therefore, making our marigold flowers an excellent choice for gardens of any size or location, bringing vibrant beauty and adaptability to your space.

MET safety certified；Comply with UL 499；CSA C22.2 No.64

Ensures the root area of seedlings remains between 70℉and 85℉ to ensure growth and increased germination

Available in 4 sizes: Mini：3.5"x21", Watt: 7.3W ; Small: 10"x20", Watt: 17.5W ; Medium: 20"x20", Watt: 45W ; Large: 48"x20", Watt: 100W

Designing with waterproof construction, our seeding heat mat is safe for use indoor plantings,The new, stronger heating wire and thicker multi-layer construction offer more uniform heating and the durability to withstand rugged greenhouse environments.

The Seedfactor Seeding Heat Mat adopts the latest 7.5MM thickening,105 degrees of high temperature resistant cylindrical SJTW 5.9ft water-proof power cord (thicker than the general power cord, solid, high temperature resistant), safer and more durable, and guarantee the stability of seedling mat safety work.

Beautiful - Full color packet of Buttercrunch Lettuce (Lactuca sativa) Seed. This bibb-type lettuce forms a tight rosette hiding a buttery yellow center. Slow to bolt and tolerant to warmer temperatures. AAS winner. Minimum of 600 mg per packet (about 650 seeds).

Productive - Lettuce germinates in 7-10 days when soil temps are 50-65°F. Plant 1/4” deep and space 8-10” apart in an area with full sunlight. This variety will grow 6-8” tall with a spread of 7-10”. Heads will mature in 45-65 days, plant in USDA zones 2-11.

Fresh Lettuce for Salad - Fresh lettuce is so much tastier than what you can buy from the store. Enjoy the crunchy texture in salads or on your favorite sandwiches. This is a great, fast-growing variety to plant for a quicker harvest. We recommend picking the entire head of this lettuce when you are ready to eat.

Easy to Grow - Instructions included on each packet. Plus, we are available to answer all your questions. If these seeds don’t germinate, we will happily make it right for you.

Safe and Sustainable - Our operation is fully solar powered, and Sow Right Seeds has taken the Safe Seed Pledge to sell only fresh Non-GMO heirloom seeds for you and your family.

Heatwave Lettuce Seed Mix - 1 g Packet ~900 Seeds - Blend of Cimarron, Bronze Mignonette, Rouge D'Hiver, Merveille des 4 Seasons, Oakleaf, Ruby and Red Salad Bowl

Non-GMO - Open Pollinated - Premium Seeds - High Germination Rate

Farm & Garden Vegetable Seeds

55 to 65 Days to Full Maturity - Annual Crop - Not Intended to Over-winter - All Zones in the U.S.A

Mountain Valley Seed Company Brand - Independently Family Owned & Operated Small Seed Company - Premium Quality Seeds

Vibrant Blooms: Zinnia flowers boast stunning orange hues, adding a burst of color to any garden or floral arrangement.

Easy to Grow: These seeds are known for their ease of cultivation, making them suitable for both beginner and experienced gardeners.

Long-Lasting Flowers: Once in bloom, Orange Zinnias tend to have a prolonged flowering period, providing weeks of colorful enjoyment.

Versatile Use: Whether planted in gardens, pots, or used as cut flowers, Orange Zinnias are versatile and add a touch of elegance to any space.

Attracts Pollinators: Their bright blooms are attractive to pollinators like butterflies and bees, making them a beneficial addition to any pollinator garden.