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A favorite variety for eating and growing, and perfect for a kid's garden
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Shipped from Asheville, NC
Trusted by 4M+ Gardeners
Grow Guarantee
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Shipped from Asheville, NC
Trusted by 4M+ Gardeners
Grow Guarantee
Fast Shipping
Secure
Shipped from Asheville, NC
Trusted by 4M+ Gardeners
Grow Guarantee
Fast Shipping
Secure
Shipped from Asheville, NC
Trusted by 4M+ Gardeners
Grow Guarantee
Fast Shipping
Secure
Shipped from Asheville, NC
Trusted by 4M+ Gardeners
Grow Guarantee
Fast Shipping
Secure
Shipped from Asheville, NC
Trusted by 4M+ Gardeners
Grow Guarantee
Fast Shipping
Secure
Shipped from Asheville, NC
Trusted by 4M+ Gardeners
Grow Guarantee
Fast Shipping
Secure
Shipped from Asheville, NC
Trusted by 4M+ Gardeners
Grow Guarantee
Fast Shipping
Secure
Shipped from Asheville, NC
Trusted by 4M+ Gardeners
Grow Guarantee
Fast Shipping
Secure
Shipped from Asheville, NC
Trusted by 4M+ Gardeners
Grow Guarantee
Fast Shipping
Secure
Shipped from Asheville, NC
Trusted by 4M+ Gardeners
Grow Guarantee
Fast Shipping
Secure
Shipped from Asheville, NC
Trusted by 4M+ Gardeners
Grow Guarantee
Fast Shipping
Secure
Shipped from Asheville, NC
Trusted by 4M+ Gardeners
Grow Guarantee
Fast Shipping
Secure
Shipped from Asheville, NC
Trusted by 4M+ Gardeners
Grow Guarantee
Fast Shipping
Secure
Shipped from Asheville, NC
Trusted by 4M+ Gardeners
Grow Guarantee
Fast Shipping
Secure
Shipped from Asheville, NC
About the Variety
Best SellerStaff Pick
Key Features
Heat Tolerant
Drought Tolerant
Attracts Bees
Attracts Butterflies
Fast Growing
Easy to Grow
Perfect for Cut Flowers
Perfect for Borders
Perfect for Dried Flowers
Perfect for Xeriscaping
Edible
Reduces Erosion
Microgreens
North American Native Cultivar
Plant Details
BOTANICAL NAME
Helianthus annuus
LIFE CYCLE
Annual
SEED TYPE
Heirloom Seed
Open Pollinated Seed
LIGHT REQUIREMENT
Full Sun
BLOOM SEASON
Summer through Fall
GROWTH HABIT
Upright
PLANT HEIGHT
Up to 144 inches
PLANT TYPE
Giant
Single-Flowered
COLOR
Yellow
The most familiar and iconic of all the classic sunflowers, our Mammoth Grey Stripe Sunflower seeds may look like the kind you can eat, but we think you'll find them much more rewarding when planted in a sunny location. These beautiful flowers live up to their name and can grow up to a towering 12 feet high with 10+ inch blooms!!
We guarantee that our seeds & bulbs will be true to type and ready to thrive. If something doesn't grow as expected, we will make it right. Questions? Call us at 855-440-2929
My sunflowers are growing everybdaybwithbthebtallest being about 8 feet and shortest at 5. Too early for the flower yet but we are enjoying the process.
Store owner replied:
Hello Michael B. Thank you for your review of Eden Brothers! We truly appreciate you bringing this to our attention. Feedback like yours is invaluable, as it helps us continually improve our products and planting instructions. Mammoth Grey-Stripe sunflowers typically take 80–95 days from planting to bloom, and sometimes a delay in flowering can occur if they are receiving too much nitrogen, which promotes leafy growth over blooms. Ensure they’re getting full sun (at least 6–8 hours daily) and avoid additional high-nitrogen fertilizer at this stage. With the right conditions, you should see buds forming soon, followed by their large, iconic blooms. We reached out previously, but wanted to make sure we gave ample opportunity to resolve this issue if it continues. Feel free to reach out by responding to our email to you, or by phone Monday through Friday from 9am - 5pm Eastern time at 855-440-2929. We are here to support you more if needed and hope you start to see those beautiful blooms soon!
These are the most amazing flowers! Very high germination rate and extremely healthy. Neighbors from all over continue to stop by and admire the flowers. Bees, butterflies and even wild parrots feed off of the heads.
Store owner replied:
Hello Antoinette B. Thank you for sharing your experience, and we are sorry to hear this. June is generally an appropriate time for planting sunflowers in Zone 6, but germination can still be affected by the soil drying out, excessive moisture causing seeds to rot, planting too deeply, heavy rain washing or burying the seeds, or birds and other wildlife finding the seeds. We have also shared your experience with our Quality Control Team for further review. We reached out by email to offer a resolution but haven’t heard back yet. Please reply directly to our original email when you have a chance, as we stand behind our products and want to help you have a successful experience in your garden!
Store owner replied:
Hello Martha A. Thank you for sharing your experience with this variety. We are sorry to hear your sunflowers didn’t germinate as expected. Large sunflower seeds can sometimes be affected by the seedbed drying out during germination, or overly wet conditions causing the seeds to rot. Once growing, plenty of sun, adequate spacing, and consistent moisture will help support strong development. We have passed your experience along to our Quality Control team for further investigation just in case, as we want them to do well for our customers. We reached out by email to offer a resolution but haven’t heard back yet, so please feel free to reply directly to our original email. We stand behind our products and would be happy to help you have success with your next planting!
I purchased a packet of Sunflower Seeds - Mammoth Grey-Stripe seeds from Eden Brothers and planted in Spring 2025. Only one came up, which was very disappointing. I followed planting instructions and placed in full sun area and the one that did come up is very healthy and about 6- 7 feet tall. Just wished more had germinated.
Store owner replied:
Hello Debbie H. Thank you so much for taking the time to share your experience. We're happy to hear our Customer Service Team was able to assist you. At Eden Brothers, we’re always striving to improve, and your feedback plays a big role in that. We truly appreciate your support and wish you a beautiful and successful gardening season ahead!
These flowers are so fun to grow! The blooms are a perfect segue into the fall season. They grew beautifully and make our hearts happy to look at them!
For the last number of years, I have bought several hundred lbs. of wildflower seed from American Meadows, and I just assumed that all seeds of this nature would be the same. Obviously, I was wrong. All of the flowers I bought from Eden Brothers (except for plains coreopsis) barely grew. The second most producers were cosmos. I have no sunflowers, and I planted several lbs. of them.
My suggestion would be to buy from American Meadows, now that I know the difference. I know I will.
Store owner replied:
Hello Jim. Thank you for your review of Eden Brothers! We greatly appreciate you sharing your experience! It's so important to have feedback like this so we can continually improve our products and processes. After speaking with our Customer Service Team, it seems we were able to assist you with this. Please feel free to reach back out to us if you need more assistance with anything. Thanks for your time in sharing your experience with us!
They are doing great and just about to bloom! We had some trouble at first finding a good spot with the right amount of water/sun but they are hardy and lasted a fee bad areas . Once we found a perfect spot they are getting huge and just about to bloom ! Love then
Store owner replied:
Hello Robert J. Thank you for your review of Eden Brothers! We reached out previously, but wanted to make sure we gave ample opportunity to resolve an issue if you had one. Feel free to reach out by phone Monday through Friday from 9am - 5pm Eastern time at 855-440-2929 or by email at service@edenbrothers.com. We'd love to hear from you!
After spending a lot of money on a 5lb to plant an acre. I just order some again and trying it one more time less acreage.
Store owner replied:
Hello, Juan
Thanks so much for your review! We greatly appreciate your feedback on this matter. We're always looking for ways to improve our products and service and will certainly take your information into account. If you ever have any other concerns or questions, feel free to reach out to us and we'll be happy to do all we can to assist. Thanks again for your review and best wishes for your growing season!
I tried planting an acre of sunflowers for two years and have failed. I know it's me... I was going to try this year again but I don't want to fail and spend another $800 for seeds.
Store owner replied:
Hello, Juan
Thank you for your review of our Sunflowers! We're more than happy to discuss this with you to see if we can get to the bottom of these results. Feel free to give us a call. You can reach us Monday through Friday from 9am - 5pm Eastern time at 855-440-2929 and we'll be happy to help!
Our sunflower was 12 feet tall. It was a huge tree! Beautiful! I'd post a pic if I could!
I had never planted sunflowers before June 2017. They averaged a foot of growth per WEEK finally reaching a height of 6 feet ABOVE my 6-foot white fence! Strangers stopped by to take photos. The heads measured up to 18 inches across! After losing one stalk on a windy day we tied the rest to our fence with twine. This year I couldn't find Mammoth Grey so tried another kind. It's so slow growing I've decided to order Mammoth Grey and start over, even though it's mid-June. These were beyond my wildest dreams!
I'm very pleased with my recent purchase of Mammoth Greystripe Sunflower Seeds. Customer service was great when I had to make a change on my order and the seeds arrived in a timely manner. The seeds themselves look beautiful and healthy and I'm very excited about getting them in the ground soon.
