Sunflower, Mammoth Organic Seeds, 8.8g

Helianthus annuus

$4.95
$4.95
Sale Sold out
  • Sunflower, Mammoth Organic Seeds, 8.8g - Ferry - Morse
  • Sunflower, Mammoth Organic Seeds, 8.8g - Ferry - Morse
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1 6

Sunflower, Mammoth Organic Seeds, 8.8g

Helianthus annuus

$4.95
$4.95
Sale Sold out
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Product Information Chevron Down Chevron Forward

The Mammoth Sunflower is an easy-to-grow summer annual that is also the state flower of Kansas.

Mammoth Sunflower's hardy nature requires minimal maintenance, giving you more time to enjoy the beautiful blooms it provides!

These organic sunflower seeds produce stately yellow sunflowers with enormous heads, more than one foot across, which provide spectacular beauty first, then seeds for roasting or bird feeding. An ideal addition to any garden, these sunflowers are easy to grow and yield gorgeous, vibrant yellow blooms. 

Visit this link to learn more about growing a sunflower garden.

Sku: 1540

Common Name: Sunflower

Botanical Name: Helianthus annuus

Growing Information Chevron Down Chevron Forward
Good For Pollinators

Good For Pollinators

Grows best In

Grows
Best In:

Full Sun

Germination

Days to
Germination:

14 - 21 Days

Container

Best
Container Size:

18"+

Height

Growing Height:

84 -144"

water Needs

Water
Needs:

Average (1 - 2 in / week)

Plant Lifecycle

Plant
Lifecycle:

Annual

Plant Type

Plant Type:

Flower

Harvest/Bloom Season

Harvest/Bloom
Season:

Spring|Summer

Growing Season

Growing
Season:

Summer

Key Features Chevron Down Chevron Forward

Characteristics: Attracts butterflies, pollinators, songbirds, and specialized bees | Pet friendly

Color: Yellow

Fill Weight (grams): 8.8 g

Approximate Seed Count: 70 - 85

Days To Bloom: 75 - 90 Days

Landscape Use: Bedding

Resistance: Deer

Tolerance: Drought|Heat|Dry Soil|Poor Soil

Package Dimensions: 3.25 x 4.5"

Instructions Chevron Down Chevron Forward

Sow a few seeds evenly spaced in hills, 8 inches high and 12 inches across. Young vines should have a fence, trellis, or heavy cord on which to climb. When young vines are about 8 inches, thin to 3 plants per hill. Does not transplant well.

Planting Depth: 1"

Seed Spacing: Plant Organic Mammoth Sunflowers seeds approximately 18 - 24" apart.

Nutrient Care Instructions: Apply SUPERthrive once per week. Soak in solution of 1/4 tsp per gal for 15 min. or longer depending on size and type.

Suggestions Chevron Down Chevron Forward

Excellent for tall blooming backgrounds and screens for unsightly places. Harvest seeds by cutting flower heads when backs yellow, then hang downward in a warm, dry place.

Shipping Chevron Down Chevron Forward

Free shipping is available on all orders over $35. Orders under $35 have a standard shipping rate of $7.99, but for a limited time, seed-only orders ship for just $2.99—a $5 discount automatically applied at checkout. Most orders are shipped within 2 business days of purchase. However, home décor and embroidered items may take 2–7 business days to ship, depending on the day of the week your order is placed. For more details, please click here to review our Shipping & Returns Policy .

At Ferry Morse, we are proud of our non-GMO & guaranteed fresh seeds.

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Gardening Tips Straight From the Blog

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Overall rating: 4.84127 / 5 from 63 reviews.

AI Generated Review Summary

The Mammoth Sunflower seeds offer clear packaging and easy-to-follow instructions, leading to beautiful and high-quality sunflowers that grow quickly and provide abundant blooms. Customers appreciate the affordability and the ease of growing these organic seeds.

Summary topics

  • Packaging Clarity: 10%
  • Ease of Instructions: 10%
  • Sunflower Beauty and Quality: 36%
  • Seed Quality and Price: 8%
  • Growth Speed: 17%

Review topics: ["instructions","quality","shipping","picture","look","results","value","service","packaging","buy","seeds","sunflowers","flowers","growing","plants","germination","see","appeal","grew","heads","blooms","brand"].

Review highlights

  • "My sunflowers have been planted for around 2 weeks now and are growing very fast." — Mdshrp
  • "Growing quickly can’t wait for full bloom I love sunflowers and have had the most luck with Ferry-Morse brand." — Amanda M.
  • "These are great quality seeds, they sprouted fast and so far are really healthy plants." — Grant B.

Reviews

Received replacement seeds

"I don't know my Zone. Next season I will plant. Thank you!! Check this site for misspelled text of yours, "What's YOU grow zone"?"

— Daniel G. (5/5)

I am excited to get

"I am excited to get them in the ground. I will plant a few in the greenhouse next two weeks"

— Betty M. (5/5)

Seeds look good

"The seeds were mailed right away by FM, so I received them in a timely manner. The seeds look great. I'll sow the seeds directly outdoors sometime in April. Look forward to seeing the sunflowers grow in my garden this year."

— Surfer (5/5)

beautiful flowers

"beautiful flowers"

— LAVERNE M. (5/5)

Yellow sunflowers

"They sprouted, grew to a few inches high & died."

— Deidra W. (2/5)

Great sunflower seeds!

"This product was great! It's just too cool now to try to plant them but I plan on planting a bunch next season! I am excited to see some giant sunflowers growing in my front yard."

— Taylorm703 (5/5)

Love

"Simple package and easy to read for directions. Growing instructions are clearly stated. Quick use and easy to open. Love the picture and bright text"

— Chelseyl34 (5/5)

Good quality and easy to plant.

"I like these seeds very much because I didn't do much. I only did a shallow ditch put the seeds, and then covered it with dirt. One month later it had been growing bigger and I didn't do much, just watering. This seed price is very good, and cheaper, for the good quality seeds."

— Valerias262 (5/5)

Ryshi ÿhhÄ¥7j â·

"I was so excited to get to try these Mammoth Sunflower Seeds for free from Influenster in exchange for my honest opinion. I had big hopes when I planted these seeds, but unfortunately, I didn't have any that sprouted at all. These Sunflower Seeds are very easy to grow (normally). They provide lasting beauty and enjoyment for the entire season. When completely bloomed, they have an enormous head. They provide spectacular yellow beauty to your garden and then the seeds for you to snack on. I would definitely recommend everyone to go try and at least plant some of these Mammoth Sunflower Seeds and at least see if any of them will bloom!! I sure hope so!!"

— Lilkimmys (5/5)

Great for beginners

"These sunflowers are definitely for anyone to grow, from beginners all the way up to experienced. I began growing them in my backyard and took very little effort. However, a storm unfortunately hit and destroyed everything. As a result, I was unable to capture any progress photos. Luckily though, many seeds are included in the package. As a result, I will be attempting to grow some sunflowers again. I would definitely recommend these to anyone who was considering adding sunflowers to their garden."

— Anthonyr54 (5/5)

Q&A