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Seed Needs, 300+ Mammoth Grey Stripe Sunflower Seeds for Planting (Helianthus annuus) Grow Giant Sun Flowers! Attracts Hummingbirds, Bees & Butterflies/Monarchs - Bulk

4.4 4.4 out of 5 stars 2,419 ratings

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300 Seeds
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Purchase options and add-ons

Plant or Animal Product Type Flower
Indoor/Outdoor Usage Outdoor
Brand Seed Needs
Material Feature GMO Free, Heirloom
Color Grey
Special Feature Heirloom, Non-GMO & Untreated
Expected Blooming Period Summer to Fall
Sunlight Exposure Full Sun
Unit Count 1.0 Count
Expected Planting Period Spring

About this item

  • Quality Sunflower seeds packaged by Seed Needs. Intended for the current and the following growing season. Packets are 3.25" wide by 4.50" tall and come with a full colored illustration on the front side, as well as detailed sowing instructions on the reverse.
  • Mammoth Grey Stripe is an heirloom variety, which is sought after for it's plump seeds. The plants themselves reach a towering height of roughly 6 to 10 feet tall, producing 10 to 20 inch wide flower heads.
  • Categorized as an annual flowering plant, Mammoth Grey Stripe will grow quickly from freshly harvested seeds. The plants will produce a single stem, populated with dozens of spade shaped leaves. Each plant will produce hundreds of seeds by the end of the growing season, which can be baked and consumed or used as bird feed.
  • Mammoth Grey Stripe Sunflowers are extremely tall, so they are best used as a backdrop plant, or sown in fields, by the masses.
  • All Sunflower seeds sold by Seed Needs are Non-GMO based seed products and are intended for the current & the following growing season. All seeds are produced from open pollinated plants, stored in a temperature controlled facility and constantly moved out due to popularity.

Additional Details

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Customer ratings by feature

Flavor
4.7 4.7
Easy to grow
3.8 3.8
Giftable
3.7 3.7
Value for money
3.6 3.6

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Product Description

flower herb vegetable vine seed seeds for planting sowing sewing gardening growing

A Seed Company On A Mission For Change

Seed Needs has been providing gardeners with quality seed products since 2010 and has shipped millions of packets to happy customers all over the US. We offer flowers, herbs, vegetables, vines, wildflower blends, seed packet collections and seed packet favors.

With the success of our brand, we have kept our promise to continually donate to different organizations and personally sponsor children all over the globe each and every month. We grew our sponsorships from just 1 child to over 100 children worldwide in only a few years. We would like to sincerely thank all who support us because it wouldn't be possible without you!

mammoth grey stripe sunflower seeds for planting

About Our Packets

Front Side

Seed packets by Seed Needs are beautifully illustrated and provide a colorful depiction of the variety inside. We provide the common name, as well as the scientific name, seed quantity and a few specs about the variety to be grown.

Back Side

Each packet contains full growing instructions on the reverse side. Specifications on sowing the seed, growing conditions such as sunlight and moisture preferences and germination and growth information can be found as well.

We also provide a QR code to scan for easy reordering.

About Our Seeds

  • Always Non-GMO / Untreated.
  • Stored in a temperature controlled facility that's free of moisture.
  • Always packaged for the current and the following growing seasons.
  • True to the variety advertised.
  • 99% pure seed with no added fillers.

untreated vegetable seeds for planting an outdoor garden

viable vegetable seeds for planting a vegetable garden

heirloom vegetable seeds for planting a vegetable garden

attracts pollinators to the flower garden butterflies bumblebees honeybees

Seed Needs never knowingly purchases treated seeds products. We also do not treat any of our seed products with substances such as neonicotinoid or thyram.

Always fresh and intended for the current and following growing seasons. Seeds are packaged in water resistant / tear resistant packaging.

Heirlooms are varieties that have been purposely bred, selected and passed down from generation to generation. They are wholesome picks that will breed true to the parent seed every time.

Flowers will attract all sorts of beneficial insects to the garden, such as butterflies, bumblebees, honeybees and ladybugs.

mammoth grey stripe sunflower seeds for planting

Grow a garden filled with the tall and mighty, Mammoth Gray Stripe Sunflower, from freshly harvested Helianthus annuus flower seeds. Mammoth Gray Stripe is an heirloom variety, which is sought after for its plump seeds. The plants themselves reach a towering height of roughly 6 to 10 feet tall, producing 10 to 20 inch wide flower heads. Each bloom will display bright yellow petals, which surround a golden brown center.

Categorized as an annual flowering plant, Mammoth Gray Stripe will grow quickly from freshly harvested seeds. The plants will produce a single stem, populated with dozens of spade shaped leaves. Each plant will produce hundreds of seeds by the end of the growing season, which can be baked and consumed or used as bird feed. You can also store some of the seeds away for regrowth next year as well.

Mammoth Gray Stripe Sunflowers are extremely tall, so they are best used as a backdrop plant, or sown in fields, by the masses. Primarily grown for their delicious plump seeds, Mammoth gray strip can also make a great addition to any sunflower garden as well. Plant them along fences or houses, and watch the insects cling to the massive flower heads.

  • Type: Flower
  • Color: Yellow
  • Height: 6' to 10' Tall
  • Width: 24" Spread
  • Season: Annual
  • Zones: All
  • Environment: Full sun

sowing the seed

growing conditions

germination and growth

Sowing The Seed

Sunflowers are not particularly fond of being transplanted, but if started indoors, sow in peat pots, 6 to 8 weeks prior to the last frost. Sow at a depth of 1” under topsoil. Transplant entire pots into the garden, or direct sow when the weather is warm and all danger of frost has passed. Stakes may be necessary to support your Sunflowers, only until the stems become strong enough to stand on their own.

Growing Conditions

Sunflowers grow long taproots and may rot if the roots become waterlogged. It is recommended to check your sowing area for hard, compacted soil prior to sowing. Renew any hard, compacted soil with a mixture of compost. Sunflowers will enjoy an area of full sunlight for the majority of the day and should be watered daily so that the soil is kept moist until germination has occurred.

Germination & Growth

Your Mammoth Gray Stripe Sunflower seeds will begin to germinate within 7 to 10 days after sowing. The plants will grow to a mature height of 6 to 10 feet tall and can be spaced about 16 to 20 inches apart from one another.Mammoth Gray Stripe is a giant in comparison to many other varieties of Sunflowers. They are primarily grown for their plump and delicious seed.

Product information

Warranty & Support

Product Warranty: For warranty information about this product, please click here

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Seed Needs, 300+ Mammoth Grey Stripe Sunflower Seeds for Planting (Helianthus annuus) Grow Giant Sun Flowers! Attracts Hummingbirds, Bees & Butterflies/Monarchs - Bulk

Seed Needs, 300+ Mammoth Grey Stripe Sunflower Seeds for Planting (Helianthus annuus) Grow Giant Sun Flowers! Attracts Hummingbirds, Bees & Butterflies/Monarchs - Bulk


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Seed Needs, 300+ Mammoth Grey Stripe Sunflower Seeds for Planting (Helianthus annuus) Grow Giant Sun Flowers! Attracts Hummingbirds, Bees & Butterflies/Monarchs - Bulk
Seed Needs , 300+ Mammoth Grey Stripe Sunflower Seeds for Planting (Helianthus annuus) Grow Giant Sun Flowers! Attracts Hummingbirds, Bees & Butterflies/Monarchs - Bulk
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Price-25% $5.99
List:$7.99
-33% $9.99
List:$14.99
$4.50$7.99$9.04$6.98
Delivery
Get it as soon as Friday, May 17
Get it as soon as Friday, May 17
Get it as soon as Friday, May 17
Get it as soon as Friday, May 17
Get it as soon as Friday, May 17
Get it as soon as Friday, May 17
Customer Ratings
Easy to grow
3.8
3.8
3.8
3.6
3.8
Value for money
3.6
3.6
3.2
3.3
4.0
Sold By
Seed Needs LLC
Seed Needs LLC
CLAIX
Seed Needs LLC
Amazing Gifts Direct LLC
Survival Garden Seeds
type
Flower
Flower
sunflower seeds
Flower
Sunflower
flower
number of pieces
300
600
75
40
500
sunlight exposure
Full Sun
Full Sun
Full Sun
Full Sun
Full Sun
Full Sun
usda hardiness zone
1,2,3,4,5,6,7,8,9,10,11
1,2,3,4,5,6,7,8,9,10,11
1,2,3,4,5,6,7,8,9,10,11
blooming period
Summer to Fall
Summer to Fall
Summer to Fall
Summer to Fall
Spring to Fall
Summer
planting period
Spring
Spring
Spring
Spring, early fall
soil type
Average / Fertile / Loose / Free of Gravel
Average / Fertile / Loose / Free of Gravel
Sandy Soil
Average To Fertile / Loose Soil
Sandy Soil
expected height
10 feet
10 feet
5 feet
6 feet
moisture needs
Regular Watering
Regular Watering
Moderate Watering
Regular Watering
Moderate Watering
Moderate Watering

Customer reviews

4.4 out of 5 stars
4.4 out of 5
2,419 global ratings

Customers say

Customers like the appearance and quality of the sunflower seeds. They say the flowers are pretty and the package is very pretty. However, some customers have reported that the sunflowers are small and not as large as the ones advertised. Opinions are mixed on value and growth rate.

AI-generated from the text of customer reviews

44 customers mention44 positive0 negative

Customers are satisfied with the appearance of the plant seeds. They mention that the flowers are beautiful, and the package is very pretty. Some customers also say that the seeds that did sprout are looking good.

"...3. **Aesthetically Pleasing:** From their towering heights to their brilliant yellow, orange, and even red blooms, sunflowers add a touch of..." Read more

"...paid for itself, exceeded my expectations, and produced some truly beautiful sunflowers!..." Read more

"...the first or second week of June (kind of late), but they’re looking so pretty...." Read more

"...While they weren't as big as I hoped, they were still beautiful and I harvested the seeds from the spent ones for a fall harvest." Read more

39 customers mention39 positive0 negative

Customers are satisfied with the quality of the seeds. They say it's a great product, with excellent yield and healthy saplings. Customers are also happy with the result.

"...Educational Opportunity:** Planting sunflowers can be a wonderful educational experience, especially for children...." Read more

"Easy to germinate and so rewarding when they bloom" Read more

"...I’m very impressed with these sunflower seeds. Every seed was in perfect condition as you can see from my picture...." Read more

"...It’s already paid for itself, exceeded my expectations, and produced some truly beautiful sunflowers!..." Read more

147 customers mention83 positive64 negative

Customers are mixed about the growth rate of the plant seeds. Some mention that they germinate beautifully, incredibly well, and quickly. However, others say that their seeds were very dry and only a couple sprouted.

"...1. **Easy and Beginner-Friendly:** Sunflowers are renowned for their adaptability and ease of cultivation, making them a perfect choice for novice..." Read more

"...year they only grew about 2 feet but never any higher and only about 10 percent grew compared to the years before where I would get 90 percent of..." Read more

"There were 10 extra seeds and I had a 99% success on germination. Highly recommended!" Read more

"Not single seed that did not sprout, it s just not a jumbo mega seed, not even average." Read more

26 customers mention10 positive16 negative

Customers are mixed about the value of the plant seeds. Some mention that it's a great value, with a good amount of seeds for money. Others say that it was a complete waste of money, disappointing, and marginal at best.

"...Sadly, the order had less than the three hundred promised, but even worse was that many of the seeds were rather tiny, compared to what they should..." Read more

"...Great growth!Highly recommend! Excellent price for the amount of seeds received!I’m very impressed with these sunflower seeds...." Read more

"...very expensive seeds, will update when they start growing" Read more

"...Definitely a waste of time and money. I would not recommend u buying these at all. Unless u want all yellow sunflowers and very small "mammoth"" Read more

16 customers mention11 positive5 negative

Customers are mixed about the durability of the plant seeds. Some mention that they're resilient and forgiving, and can last for days. However, others say that only a few grew and then died.

"...5. **Low Maintenance:** Once established, sunflowers require minimal care. They thrive in a variety of soils and can tolerate drought conditions...." Read more

"All my seeds germinated which is awesome. They are strong beautiful plants I will buy them again." Read more

"...(I'm watering them with a hose, but still, it is not the best of growing conditions, and because the hose/sprinkler setup is one of the only..." Read more

"Growing well so far. The packing is very durable I could not get the paper open when I was planting without using a spade tip!" Read more

29 customers mention8 positive21 negative

Customers are dissatisfied with the size of the sunflower seeds. They mention that the flower is pretty, but it's not as large as the typical sunflowers. Some say that the seeds are rather tiny.

"It worked. But the seeds are surprisingly tiny — I have never seen such tiny ones. If one expects to harvest for eating seeds...." Read more

"...than the three hundred promised, but even worse was that many of the seeds were rather tiny, compared to what they should have been, and I seriously..." Read more

"...9/22/23 - They're huge! 12 feet tall and blooming. Well, the ones that didn't get wiped out by the pup...." Read more

"...Some were smaller. While they weren't as big as I hoped, they were still beautiful and I harvested the seeds from the spent ones for a fall harvest." Read more

2nd purchase
5 Stars
2nd purchase
Easy to germinate and so rewarding when they bloom
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Top reviews from the United States

Reviewed in the United States on August 23, 2023
Size: 300 SeedsVerified Purchase
Title: Nurturing Nature's Beauty - Planting Sunflower Seeds

Rating: ★★★★★ (5/5)

Embarking on the journey of planting sunflower seeds is like cultivating a symphony of vibrant colors and majestic beauty in your own backyard. These versatile and hardy plants are not only visually stunning but also incredibly rewarding to grow. Here's why planting sunflower seeds is an excellent choice for nature lovers:

1. **Easy and Beginner-Friendly:** Sunflowers are renowned for their adaptability and ease of cultivation, making them a perfect choice for novice gardeners. Their resilience and forgiving nature make them an ideal starting point for those new to gardening.

2. **Biodiversity and Wildlife Attraction:** Sunflowers attract a myriad of beneficial insects like bees, butterflies, and ladybugs. They also provide a food source for birds, particularly when the seeds mature. Your garden will become a haven for diverse wildlife, enhancing the ecosystem.

3. **Aesthetically Pleasing:** From their towering heights to their brilliant yellow, orange, and even red blooms, sunflowers add a touch of elegance and splendor to any garden landscape. Their sheer beauty uplifts spirits and offers a sense of serenity.

4. **Educational Opportunity:** Planting sunflowers can be a wonderful educational experience, especially for children. Observing the growth stages, from sprouting to flowering, can teach valuable lessons about the natural world and the importance of nurturing plants.

5. **Low Maintenance:** Once established, sunflowers require minimal care. They thrive in a variety of soils and can tolerate drought conditions. With proper spacing and occasional watering, they will flourish without constant attention.

6. **Natural Sun Trackers:** Sunflowers are famously known for their heliotropic nature, meaning they follow the sun's movement across the sky. Observing this behavior can be a fascinating daily ritual that connects you with the Earth's natural rhythms.

7. **Abundance of Seeds:** Sunflowers produce an abundance of seeds per flower head. These nutritious seeds are not only great for human consumption but can also be left for birds to enjoy, contributing to the overall ecological balance.

8. **Companion Planting Benefits:** Sunflowers can serve as excellent companion plants for various vegetables and herbs, providing shade and support to other plants while enhancing the garden's aesthetics.

9. **Floral Arrangements:** Once the sunflowers have bloomed, you can harvest the flowers to create stunning floral arrangements that bring the beauty of the garden indoors.

10. **Joy of Harvesting:** One of the most satisfying aspects of growing sunflowers is harvesting the mature seed heads. The process of drying, removing the seeds, and preparing them for consumption or storage can be incredibly rewarding.

In conclusion, planting sunflower seeds is a joyful and fulfilling endeavor that offers numerous benefits to both you and the environment. The process of nurturing these remarkable plants, watching them grow, and witnessing the beauty they bring to your surroundings is a deeply satisfying experience that connects you with the cycles of nature. So, whether you're a seasoned gardener or a curious beginner, planting sunflower seeds is a choice that promises a bounty of beauty, learning, and enrichment.
4 people found this helpful
Report
Reviewed in the United States on May 4, 2024
Size: 50 SeedsVerified Purchase
They are sunflower seeds & plenty of them. Our yellow birds & others love them in the fall.
Reviewed in the United States on May 2, 2024
Size: 50 SeedsVerified Purchase
There were 10 extra seeds and I had a 99% success on germination. Highly recommended!
Reviewed in the United States on February 7, 2024
Size: 300 SeedsVerified Purchase
It worked. But the seeds are surprisingly tiny — I have never seen such tiny ones. If one expects to harvest for eating seeds. Probably this is not the correct one. Later I found a big packet of large sunflower seeds (1.5 lbs) at an Asian grocery store . It sprouted as well.
Reviewed in the United States on April 30, 2024
Size: 300 SeedsVerified Purchase
Lo utilize para el jardín yis abejas recolectarán polen me gustó la calidad de germinacion
Reviewed in the United States on April 19, 2024
Size: 300 SeedsVerified Purchase
All my seeds germinated which is awesome. They are strong beautiful plants I will buy them again.
Reviewed in the United States on February 15, 2024
Size: 300 SeedsVerified Purchase
I counted my seeds to get a feel for my spacing. Sadly, the order had less than the three hundred promised, but even worse was that many of the seeds were rather tiny, compared to what they should have been, and I seriously doubt they will produce a decent size sunflower plant. When a company short changes you on the number of items you paid for it makes one wonder if they are intentionally short changing everyone.
4 people found this helpful
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Reviewed in the United States on April 20, 2024
Size: 300 SeedsVerified Purchase
Easy to germinate and so rewarding when they bloom
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5.0 out of 5 stars 2nd purchase
Reviewed in the United States on April 20, 2024
Easy to germinate and so rewarding when they bloom
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One person found this helpful
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