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Sow Right Seeds - Mammoth Sunflower Seeds to Plant - Grow Giant Sunflowers in Your Garden - Non-GMO Heirloom Seeds for Planting an Outdoor Garden - Bright Yellow Blooms - Attract Bees and Birds (1)

4.3 4.3 out of 5 stars 5,407 ratings
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Amazon's Choice in Flower Plants & Seeds by Sow Right Seeds

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About this item

  • Beautiful - Mammoth Sunflower (Helianthus annuus) seeds. These seeds grow crazy tall huge beautiful sunflowers with heights of 8-12 ft. The seeds are open pollinated and can be saved to plant year after year. Harvest and roast your own sunflower seeds. Minimum of 8g per packet (approximately 70 to 80 seeds).
  • Productive - Mammoth Sunflower germinates in 7-14 days when soil temps are 70-75°F. Plant 1” deep and space 3’ apart in an area with full sunlight. This variety will grow 8-12’ tall with a spread of 2-3’. Flowers will mature in 80-90 days, plant in USDA zones 3-9.
  • Pollinator and Bird Friendly - Bees love the nectar in sunflowers and will travel around helping pollinate your garden. Towards the end of the season, birds also love to come and eat the dried seeds.
  • 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.

Additional Details

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Customer ratings by feature

Instruction quality
3.8 3.8
Easy to grow
3.7 3.7
Value for money
3.6 3.6
Giftable
3.6 3.6

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$4.94
Get it as soon as Wednesday, Mar 27
In Stock
Sold by Sow Right Seed and ships from Amazon Fulfillment.
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$10.99
Get it as soon as Wednesday, Mar 27
In Stock
Sold by STORE009 and ships from Amazon Fulfillment.
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Sow Right Seeds - Mammoth Sunflower Seeds to Plant - Grow Giant Sunflowers in Your Garden - Non-GMO Heirloom Seeds for Planting an Outdoor Garden - Bright Yellow Blooms - Attract Bees and Birds (1)
Sow Right Seeds - Mammoth Sunflower Seeds to Plant - Grow Giant Sunflowers in Your Garden - Non-GMO Heirloom Seeds for Planting an Outdoor Garden - Bright Yellow Blooms - Attract Bees and Birds (1)
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Price$4.94$6.99$4.84$5.98$5.99$4.50
Delivery
Get it as soon as Wednesday, Mar 27
Get it as soon as Wednesday, Mar 27
Get it as soon as Wednesday, Mar 27
Get it as soon as Wednesday, Mar 27
Customer Ratings
Easy to grow
3.7
3.7
3.9
4.0
3.8
Value for money
3.6
3.6
3.7
3.1
3.6
Giftable
3.6
3.6
3.5
3.7
Instruction quality
3.8
3.8
3.8
Sold By
Sow Right Seed
Sow Right Seed
Survival Garden Seeds
Uplant Garden Seeds
Seed Needs LLC
CLAIX
type
Flower
Flower
flower
sunflower,sunflower seeds
Flower
sunflower seeds
number of pieces
70
70
50
75
sunlight exposure
Full Sun
Full Sun
Full Sun
Full Sun
Full Sun
Full Sun
usda hardiness zone
3
3
1,2,3,4,5,6,7,8,9,10,11
blooming period
Summer
autumn,summer
Summer to Fall
Summer to Fall
soil type
Sandy Soil
Sandy Soil
Average / Fertile / Loose / Free of Gravel
Sandy Soil
moisture needs
Moderate Watering
Moderate Watering
Moderate Watering
Moderate Watering
Regular Watering
Moderate Watering

Product Description

Sow Right Seeds. heirloom open pollinated varieties. sustainable dependable bountiful.
large paper packets, easy-to-follow growing instructions
good eats, safe seed, and great gifts
community action helping in the community
sow right seeds assortment of seed packets

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Sow Right Seeds - Mammoth Sunflower Seeds to Plant - Grow Giant Sunflowers in Your Garden - Non-GMO Heirloom Seeds for Planting an Outdoor Garden - Bright Yellow Blooms - Attract Bees and Birds (1)


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Customer reviews

4.3 out of 5 stars
4.3 out of 5
5,407 global ratings

Customers say

Customers like the appearance and quality of the plant seeds. For example, they mention that they look nice and big. Some complain about the value and size of the seeds. That said, opinions are mixed on the germination rate.

AI-generated from the text of customer reviews

44 customers mention40 positive4 negative

Customers are satisfied with the appearance of the plant seeds. They mention that the seeds look nice and big, and the variety is great. They are happy with the flower quality and say that the flowers lasted into the fall.

"...In addition to their visual appeal and support for pollinators, these sunflowers produced an abundance of seeds that could be harvested for snacking..." Read more

"I love the look of these sunflowers. Am ready to plant if it ever warms up!" Read more

"...towards the end of summer they are still thriving and look amazing the variety is great. the sizes are amazing and value for the money" Read more

"...and it is incredible to see both the birds and these giant, beautiful sunflowers. The price is just right and they are so easy to plant and grow." Read more

34 customers mention31 positive3 negative

Customers are satisfied with the quality of the plant seeds. They mention that they germinate quickly, grow strong, and are still thriving at the end of summer. Some customers are impressed by the vigor and health of the young plants. They also mention that the flowers last into the fall.

"...I was impressed by the vigor and health of the young plants...." Read more

"...but even though I had planted these towards the end of summer they are still thriving and look amazing the variety is great...." Read more

"...Very impressive colors, size, strength and just overall the best for intermediate or beginner gardeners...." Read more

"Appears to be ok. Hoping to plant them very soon." Read more

221 customers mention140 positive81 negative

Customers are mixed about the germination rate of the plant seeds. Some mention that the seeds are germinating beautifully in their seeding soil, while others say that not one has germinated. Some customers also mention that only half of the seeds sprouted, while still others say they're hard to grow inside.

"...In addition to their visual appeal and support for pollinators, these sunflowers produced an abundance of seeds that could be harvested for snacking..." Read more

"...After that, they get so laden with heavy seeds that they sag dramatically. At that point, any decent storm will bring them to the ground." Read more

"The seeds germinated within 4 days! Would order again." Read more

"...They are growing so quickly and tall!!! I will keep everyone updated!PSA: the picture I’m posting is from 2 weeks ago...." Read more

15 customers mention8 positive7 negative

Customers are mixed about the yield of the plant seeds. Some mention that they have done great and work great, while others say that they didn't even come up.

"These came up for me just fine. They are “mammoth” so the heads are pretty heavy and droop. If you don’t want that select a different variety." Read more

"Not happy with this. Too hard to grow with little to no yield." Read more

"They work GREAT!!!" Read more

"Second year buying these seeds. Last year amazing! This year nothing coming up! Very disappointing...." Read more

43 customers mention12 positive31 negative

Customers are dissatisfied with the value of the plant seeds. They mention that the seeds are worthless, horrible, and disappointing. Some customers also mention that they are a little pricey for what you get.

"...Waste of money." Read more

"Not one seed sprouted or produced even a stem. Very disappointing. Don't waste your money." Read more

"...the sizes are amazing and value for the money" Read more

"A little pricey for what you get." Read more

35 customers mention8 positive27 negative

Customers are disappointed with the size of the sunflower seeds. They mention that the head of the flowers is much smaller than the leaf, and they germinate easily. Some say that the seeds are not large.

"Flowers are too big causing stems to bend and break ." Read more

"...problem of giving some plants away (good problem to have) because they are massive and took up more space than I thought...." Read more

"...So the sunflower seeds are highly attractive to wild life. Next time I am going to plant outside and protect until plants are well established." Read more

"...the sizes are amazing and value for the money" Read more

Great germination
4 Stars
Great germination
I’ve never tried growing sunflowers or really any type of plant from seed until I bought these! I want to recommend the “paper towel method” to anyone who is trying these seeds out. If you don’t know what that is then google it!My seeds germinated inside after a few days. I put around 12 seeds in the plastic bag and only 2 didn’t produce. When it was time, I moved the seeds outside and put protective domes over them (we have every imaginable critter and pest back here). They are growing so quickly and tall!!! I will keep everyone updated!PSA: the picture I’m posting is from 2 weeks ago. They are about double this height now.
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Reviewed in the United States on April 3, 2023
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1.0 out of 5 stars No good
Reviewed in the United States on February 3, 2024
Just a little heads up you will receive a package full of sunflower seeds but most are dead. I did the water test and about 4 dank to the bottom meaning they are viable while all the others who float are dead and won’t sprout!!!
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7 people found this helpful
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Reviewed in the United States on January 31, 2024
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Reviewed in the United States on August 21, 2022
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