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45 Mammoth Sunflower Seeds for Planting Outdoors, Sturdy Grey Stripe Heirloom, Vigorous Flowers Yielding Striking Giant Blooms for Backyards
  • 45 Mammoth Sunflower Seeds for Planting Outdoors, Sturdy Grey Stripe Heirloom, Vigorous Flowers Yielding Striking Giant Blooms for Backyards
  • 45 Mammoth Sunflower Seeds for Planting Outdoors, Sturdy Grey Stripe Heirloom, Vigorous Flowers Yielding Striking Giant Blooms for Backyards
  • 45 Mammoth Sunflower Seeds for Planting Outdoors, Sturdy Grey Stripe Heirloom, Vigorous Flowers Yielding Striking Giant Blooms for Backyards
  • 45 Mammoth Sunflower Seeds for Planting Outdoors, Sturdy Grey Stripe Heirloom, Vigorous Flowers Yielding Striking Giant Blooms for Backyards
  • 45 Mammoth Sunflower Seeds for Planting Outdoors, Sturdy Grey Stripe Heirloom, Vigorous Flowers Yielding Striking Giant Blooms for Backyards
  • 45 Mammoth Sunflower Seeds for Planting Outdoors, Sturdy Grey Stripe Heirloom, Vigorous Flowers Yielding Striking Giant Blooms for Backyards
45 Mammoth Sunflower Seeds for Planting Outdoors, Sturdy Grey Stripe Heirloom, Vigorous Flowers Yielding Striking Giant Blooms for Backyards

45 Mammoth Sunflower Seeds for Planting Outdoors, Sturdy Grey Stripe Heirloom, Vigorous Flowers Yielding Striking Giant Blooms for Backyards

$16.19 $14.41 SAVE 11%
Ships in 1–3 business daysEstimated delivery in 10–14 business days
Carefully Packaged To Arrive Healthy

Live plants need special consideration during shipping. Before your order leaves us, we check its condition and prepare it to help reduce movement and damage during transit.-What We Do:

  • Check the plant before packing to make sure it is in suitable condition for shipping.
  • Secure the plant inside the box to help minimize movement and impactduring transit.
  • Protect the stems, foliage, and root area with appropriate packing materials and placement.
  • Consider moisture and temperature conditions when preparing the package, including adding a heat pack when needed during cold weather.
Live Plant Guarantee On Arrival

If your plant arrives with a serious problem, you don't have to figure it out alone. Contact us and we'll review the situation according to our plant guarantee policy. What We Do

  • Review the plant's condition on arrival
  • Ask for photos or additional details when needed
  • Help distinguish normal shipping stress from serious damage
  • Determine the appropriate next step according to our policy
  • Provide support if you have concerns after unboxing
Support From Our Plant Gardening Experts

Your support doesn't end when the package arrives. If you're unsure how to care for your plant or something doesn't look right, our team can help you work through it.What We Can Help With:

  • Watering and light
  • Planting, potting, and soil
  • Acclimation and transplant shock
  • Yellowing or wilting leaves
  • Other common plant-care concerns
  • Fast, effective solutions when problems arise

Elevate your outdoor landscape with the Sunflower Mammoth Grey Stripe Seeds. Packed with care for your garden projects, these vigorous Non-GMO heirloom seeds offer a reliable way to grow premium, highly decorative giant flowers right in your own yard. The Mammoth Grey Stripe variety is highly prized by gardeners because it is incredibly easy to work with from seed, provides a stunning visual presence with its massive yellow blooms, and offers a world-class display of towering, sturdy stalks with minimal daily effort.

These robust seeds are very manageable and are intended to provide a strong foundation for a prominent floral accent. Whether you are looking to create a striking living fence, fill an empty backyard border, or add an adaptable, heat-tolerant focal point to your yard, these heirloom seeds will grow into beautiful, sturdy plants that bring a fresh, monumental edge to your favorite outdoor space season after season.

  • VIGOROUS NON-GMO HEIRLOOM SEEDS: You receive a premium packet of Sunflower Mammoth Grey Stripe seeds. These carefully selected Non-GMO, heirloom seeds are extremely easy for you to handle and are intended to provide a massive head start for your outdoor garden, ensuring a high germination rate and vigorous, sturdy growth from the very beginning.

  • STRIKING GIANT BLOOMS: This highly sought-after seed variety produces breathtaking, massive yellow flower heads that can reach impressive sizes. This high-impact floral display provides a dependable source of elegant texture and a bold, cheerful look for your exterior space.

  • TOWERING & STURDY STALKS: Beyond their stunning floral presence, these towering sunflowers are highly prized for their monumental height. They are a highly adaptable option designed to act as a sturdy and consistent visual focal point, working perfectly when planted along fences, walls, or as a striking background for outdoor borders.

  • HEAT TOLERANT & ROBUST: The Mammoth Sunflower is a highly dependable and robust option for gardeners in various warm climates. It is specifically cultivated to thrive in full sun, tolerating hot summer temperatures with absolute ease, making it an incredibly adaptable choice for bright, sunlit outdoor spaces.

  • LOW MAINTENANCE & EASY TO GROW: These Non-GMO flower seeds are a simple choice for those who want a beautiful, striking outdoor space without difficult upkeep. They are intended to thrive in extremely well-draining soil, requiring very little daily attention once their deep roots have established in their sunny location.

All orders are processed and shipped as quickly as possible.

Processing Time:
Orders are prepared within 1–3 business days, which includes order handling, warehouse processing, and secure packaging with your shipping details.

Transit Time:

  • 10–14 business days for deliveries within the United States.
  • International shipping is not available at this time.

Shipping Cost:

  • Standard shipping: $12.11-$22.89

Please note that delivery timelines begin once your order has shipped, not on the order date. During periods of high demand or extreme weather conditions, minor delays may occur. If there is a significant delay, you will be notified by email with updated delivery information.

Once your order leaves our warehouse, you will receive a shipping confirmation email containing your tracking number. Some orders may be shipped in multiple packages. You can track your shipment online at any time using the provided tracking number.

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