Sunflower Mammoth Seed

SKU: 00747RAWUTR-50SD
$3.95
Sunflower Mammoth Seed
Sunflower Mammoth Seed
Sunflower Mammoth Seed
Sunflower Mammoth Seed

Sunflower Mammoth Seed

SKU: 00747RAWUTR-50SD
$3.95
$3.95
form: RAW
style: UNTREATED
size: 50 seeds
These plants are 8' and more in height when well grown and make an effective screen or background. The impressive flower heads have brown centers surrounded by yellow petals and are often 12" across. When dry, the seed heads can be cut and sold as is for wild bird food. Or spread them out under cover until seeds loosen and shatter out of the head, then package them as snack food and for baking.

Color: Brown centers surrounded by yellow petals

Growing Tips

To ensure your Mammoth Sunflower seeds grow to be tall plants, remove weeds with the help of a natural mulch. Using mulch also helps retain soil moisture and heat. Use shredded leaves as an organic mulch for your Giant Mammoth Sunflower seeds to improve soil quality. Always keep mulch away from the flowers' stems to prevent possible deterioration.

To harvest your Mammoth Sunflower seeds for sale or eating, cut the head off after the stalk dries but before fall or winter rain arrives. The flower is ready for harvest when the florets in the center wilt and the back of the flower head is turning yellow or starting to droop. Mammoth sunflower seeds do best when directly sown in a full-sun location with warm, well-drained soil after frost potential is past. Provide a trellis, heavy cord or fence for young vines to climb and develop their strong stalks. Once established, these annuals offer fair drought tolerance. Huge flowers turn the heads of passersby and appeal to butterflies and other pollinators.

Buy tall sunflower seeds online today for an eye-catching summer display of height and color!

Buy more, save more! All eligible quantity discounts will be automatically applied in your Cart.

SizeQuantityPrice Each
RAW / UNTREATED / 10,000 seeds2+$47.78


Shipping

Enjoy free standard shipping on orders over $300. For orders under $300, shipping and handling are calculated based on your pre-tax order total. Freight surcharges may apply for oversized, heavy, or special-handling items.

Most orders are currently shipping within 5–7 business days via USPS or UPS (excluding backorders), though shipping times may vary during our peak season from January - May.

We also recommend selecting a future ship date that aligns with your planting schedule. Please note that we do not ship on weekends or company-recognized holidays

To help reduce the number of partial shipments, after the first shipment, we may hold an order until the majority of remaining items are available to ship together.  

See our full shipping policy

  • Soil Temperature: 70-75°F
  • Germination Lighting: Cover Seed
  • Germination Days: 4-8 Days
  • Grow on Temperature Day: 55-60°F
  • Plant Spread: 30-36"
  • Plant Height: 8-10"
  • Plant Type: Annual
  • Seeding Depth: 0.75-1.0"
  • Maturation Days: 75 Days
  • Planting Method: Direct Sow

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