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Sunflower Seeds Mammoth Grey Stripe

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Talk about making a statement in the garden! Mammoth Grey Stripe’s huge blooms, growing to be 12” across, sit atop stems that grow to be 8-12’ tall. These garden giants were developed for seed production and attract a variety of birds to the garden. Mammoth Grey Stripe are extremely fun to watch grow and their large size make them great for scattering throughout the meadow or using as a background screen. This huge variety is also perfect for a child’s first garden. All of the seed we handle at American Meadows is non-GMO, neonicotinoid-free and guaranteed to grow. Annual.

Zones 1 - 10
Advantages
Easy to Grow
Easy to Grow
Native
Native
Extended Blooms
Extended Blooms
Hedge / Screen
Hedge / Screen
Light Requirements
Full Sun
Full Sun
Half Sun / Half Shade
Half Sun / Half Shade
Mature Plant Size 96-144 inches tall (8-12 feet)
Bloom Time Summer
SKU HGSG

Plant Information

With huge flowers (often 10 or 12" inches across) these garden giants are hybrids developed for seed production (Sunflower oil, bird seed, etc.) But we've had so many requests for them, we now have them available for meadow planting. Remember, these are the ones that grow from 8 to a whopping 12 ft. tall, so unless you're planting them alone, scatter them throughout your meadow, or use them as a background screen. Kids love watching them grow so fast and so tall, and of course, they're magnets for songbirds. Enjoy!
Associated SKUs
HGSG
HGSQP (1/4 Pound)
HGSLB (1 Pound)
HGSLB5 (5 Pounds)
HGSLB10 (10 Pounds)
Common Name Sunflower
Botanical Name Helianthus annuus
Seed Life Cycle Annuals
Light Requirements Full Sun, Half Sun / Half Shade
Flower Color Yellow
Mature Height 96-144 inches tall (8-12 feet)
Bloom Time Summer
Ships As Seed
Coverage 1/4 lb covers 2,177 sq ft.
1 lb covers 8,710 sq ft.
5 lbs covers 1 acre
10 lbs covers 2 acres
Seeds Per Pound 3,050
Days to Germination 10-20 days depending on soil and weather conditions.
Days to Bloom Blooms in 100-110 days
Soil Moisture Dry, Average, Moist/Wet, Well Draining
Soil Type Clay Soil, Sandy Soil, Loamy Soil, Drought/Dry Soil, Moist/Wet Soil
Native Yes
Ideal Region Northeast, Southeast, Midwest, Southwest, West, Pacific Northwest
Zones 1, 2, 3, 4, 5, 6, 7, 8, 9, 10
Advantages Easy to Grow, Native, Extended Blooms, Hedge / Screen
Additional Information Average flower size is 10-15" but can reach up to 24" across.
Edible? Yes
Is It Storable? Yes - You can store your seed in any cool (not freezing) dry place that is not subject to extreme temperature variations.
Non-GMO Yes
Neonicotinoid-Free Yes - Learn More
Ships to Hawaii, Alaska & Canada Yes

Shipping

Most orders ship within 48 hours or less.

As soon as your order is placed you will receive a confirmation email. You will receive a second email the day your order ships telling you how it has been sent. Orders for in-season products ship within 48 hours or less. Depending upon your order date, we may hold your shipment to combine it with other products on your order, if applicable. See our shipping information page for approximate ship dates and more detailed information. If you need express shipping or have any questions, please call Customer Service toll-free at (877) 309-7333 or contact us by email.

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Reviewsby PowerReviews

REVIEW SNAPSHOT®

by PowerReviews
American MeadowsSunflower Seeds Mammoth Grey Stripe
 
4.5

(based on 14 reviews)

Ratings Distribution

  • 5 Stars

     

    (9)

  • 4 Stars

     

    (3)

  • 3 Stars

     

    (2)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Pros

  • Attractive (7)
  • Hardy (7)
  • Accurate instructions (6)
  • Healthy (6)
  • Long bloom time (4)

Cons

  • Susceptible to pests (3)

Best Uses

  • Outdoors (5)
  • Border control (4)
  • Garden (4)
  • Large areas (4)
  • Cut flowers (3)
    • Reviewer Profile:
    • Avid gardener (7), Getting started (4), Master gardener (3)
    • Primary use:
    • Personal (8)

Most Liked Positive Review

 

Mammoth Grey Stripe sunflower, The King

Very easy to grow but very beautiful too! They are great for kids because of how high and big they get, but also because of how easy(kids like to watch plants grow but...Read complete review

Very easy to grow but very beautiful too! They are great for kids because of how high and big they get, but also because of how easy(kids like to watch plants grow but wont help take care of them normaly) they are to take care of! I have a big open field in my backyard that overlooks a large home that can see everything we do, so we also planted them to block the other houses view! The seeds taste great rosted with salt! They makes songbirds come in flocks:)! A big problem is that bids and pests will eat them none stop, put cheese cloth or nylon sock over the head of the plant to prevent this! If you do want to eat the seeds cut the head off(You need a tall guy to reach the head normaly, they get to 12ft. sometimes) then let them dry for a couple of days, then hit the back with a hammer or rub two heads! I would give them a 6 out of 5 just because of how they look and grow overall!

VS

Most Liked Negative Review

 

A West Virginia Review

I bought 5 lbs. of seeds for use as decoration on the campground that my family owns and operates. I used aprox. 3 lbs. along a retaining wall for a swim lake that...Read complete review

I bought 5 lbs. of seeds for use as decoration on the campground that my family owns and operates. I used aprox. 3 lbs. along a retaining wall for a swim lake that also borders the adjacent property. The others I used in front of a barn for decor. The results were varied to say the least. All of the seeds planted seemed to sprout with no problem at all. All were evenly spaced in rows where planted. Along the side of the barn I had excellent results with the seeds. almost every plant reached between 8-10 feet with blooms of almost a foot in width.(Until a thunderstorm destroyed them... but they looked great and I still harvested the seeds) However, the ones along the bank of the pond took twice as long to grow. Some of them never grew higher than two feet while some reached 7 feet. The blooms weren't nearly as impressive. All in all I would purchase again and most likely will for the 2011 season.

Reviewed by 14 customers

Displaying reviews 1-14

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4.0

Mammoth Sunflower Seeds Grey Stripe

By 

from Oak Ridge, NC

About Me Master Gardener

See all my reviews

Verified Buyer

Pros

  • Accurate Instructions
  • Attractive
  • Hardy
  • Healthy

Cons

    Best Uses

    • Garden

    Comments about American Meadows Sunflower Seeds Mammoth Grey Stripe:

    I like to attract birds and bees to my gardens. These lovely sunflowers are a good source for song birds! They also make quite a statement with their size. Mine are over ten feet tall, though I have to say we did have lots of rain this year. Still they are awesome to see towering over everything else. They do get heavy, so you may have to stake them as wind and bad storms can topple them. I would say the only problem I had was getting them big enough to wear deer and bunnies didn't eat them. They love the young plants, and many of mine were eaten by deer and rabbits. The good news is I bought the pound bag, so I would plant more. Ps I live in a rural area. I was happy with my results! These seeds are a quality product! Happy planting!

    • Primary use:
    • Personal
     
    3.0

    pleased with results

    By 

    from birmingham, al

    About Me Master Gardener

    Pros

    • Accurate Instructions
    • Attractive

    Cons

      Best Uses

      • Outdoors

      Comments about American Meadows Sunflower Seeds Mammoth Grey Stripe:

      Product used in large field surrounding wedding venue. Also used for flower arranging

      • Primary use:
      • Personal

      (1 of 1 customers found this review helpful)

       
      5.0

      Spectacular!

      By 

      from Helena, MT

      About Me Avid Gardener

      Pros

      • Accurate Instructions
      • Attractive
      • Hardy
      • Healthy
      • Showy
      • The 'it' House
      • Versatile

      Cons

      • Attract Wasps Where I Liv

      Best Uses

      • Area Delineation
      • Driveway Markers
      • Outdoors
      • Patio
      • Pool Area
      • Property Line

      Comments about American Meadows Sunflower Seeds Mammoth Grey Stripe:

      Any poor ratings can only be operator error. The reviewer with growing issues around a pond...too moist. Mine positively THRIVE in the poorest, rocky and Sandy soil you would ever think anything could even grow in.

      I inheireted/my beloved parents' property a few yrs ago. A new & quaint little home on 3 acres of desolation. We're talking what was once a river bed in historic times. People actually build their fences out of chicken wire and the rock they pull from the properties around here. And, OH THE HORROR, they grow!! The rocks!! They propagate and multiply yearly!! (Frost heave. No matter how deep ya go to clear the rocks, one winter brings a whole new 'harvest'.lol. Skidsteers are as common place as cars). My parents had planned on making a 'dessert oasis' out of this land as at 68, dad never wanted to mow lawn for longer than 30 mins again. Sadly, I lost them both before any plans began. So when we moved in here..that plan changed of course. 3 yrs later and I have a struggling but coming-along vast lawn. (I researched and purchased seed that was tolerant to our conditions as backfilling 3acres of topsoil was NOT an option ) I've went through just about 8 GRAND in trees. They do well the first yr. Ok the second...dead the 3rd (last yr) Suffice it say, I still have a barren vastness of unshaded, uneventful acreage.

      In came my newest and closest friend...the American Meadows mammoth sunflower!!
      I friend gave me a tiny container of seeds while I was at her place admiring her gorgeous display of them! They'd been soaking a few days and she hadn't the time to plant before they rotted. It was a bit late in season but when i got home, I tossed them in the ditch surrounding the property and with ZERO care or effort (I didn't even plant them! Just tossed!) I had sporadic, 12-14ft towering sunflowers!! IN THE DITCH!

      So last year, I purchased 2lbs of these! Planted them with a little more care (not much though! Merely dug a trench! No added nutrient, nothing) and lined it with seeds then me and 5yr old grandson 'kicked' dirt back over the little trench I'D carved out with the butt of my walking stick! Watered em in...and one month later, I had a solid green 'line' surrounding my property.!!! .
      At around 6", I thinned em out, but not much and THAT was my only mistake. Around the septic lids, water inlets, driveway... I thinned them about a foot apart and then again when they got bigger still. Those took off like crazy! While the property line I didn't thin...struggled. So at around a foot (thinned ones were at 3ft by now) I thinned property line out as well...and off they went. I took pics but can't find them in the bottomless pit of an album on my laptop...but I will and I'll post. I had an average of 12foot tall sunflower 'fence' around my 3 acres!! It was showstopping!!!! Our newly developed area with only a few new homes....had traffic! From people coming to see my sunflower fence!! LOL. It was epic!!
      The ONLY special care they got was ONE sprinkling of some Roberta's flowering plant food I was feeding my gardens with (hose attachment sprayer) and had just quickly gave them a once over. Not even enough to soak soil. The only water they got was run off from lawn!
      On other end of spectrum...the ones I planted on either side of driveway, had a variety of different bulbs and roots planted around them...so those ones recieved weekly watering. Monthly feeding. They failed. Compared to the others, they were MUCH smaller and nowhere near as sturdy. In fact, the winds took most of those out. But my 'fenceline' (I don't have an actual fence.) Of sunflowers stood strong and proud through the tough summer winds and spurts of blistering heat. (To me, that's 90 and above..lol)

      I experimented a bit...and the ones I put the least care into...thrived the best. Obviously...all living things need water, but in MY area, they did NOT like a constantly moist home and did best with merely the tricklings from lawn watering.

      What seemed to be the biggest requirement...was space. They do NOT DO well when they're crowded with each other. Other, smaller plantings were fine, but the Mam Daddy's (get it?'Mac Daddy'..but 'MaM'for mammoth.. Ha) like to be the star of the show and jumped ship all together or just went on growing strike if any others were within at LEAST a couple feet.

      I have found however, soaking the seeds for at LEAST a night...is crucial. But I let some go....several nights.Heck, I found a container that had fallen off the cart and rolled down into an area I didn't see it..a WEEK later! The seeds were uttery ballooned. A tad soggy even and EVEN had a fine coat of slime on them! I threw em over my shoulder and chucked the container in the cart.
      A few weeks later, I had a handful of green growth sprouting up in my dang driveway!!!! In BONE DRY, HARD PACKED ROCKCHIP SAND!

      I don't know if they would have survived because I pulled em (NO growth in the driveway! Lol) but they sure tried!

      So that's my novel. I hope it helps someone. These seeds are economical enough to experiment with. Plant them in the various areas you may have and give em spectrum of different cares. See what works best for your soil and conditions.
      Here In Helena, MT..they acted native!

      Good luck my fellow growers! We make the world besutiful-ER!

      • Primary use:
      • Personal
       
      5.0

      Six Feet and Growing

      By 

      from Chicago, IL

      About Me Getting Started

      Pros

      • Hardy
      • Reliably Germinated

      Cons

        Best Uses

          Comments about American Meadows Sunflower Seeds Mammoth Grey Stripe:

          Started them in pots outdoors to keep them from getting eaten by the rabbits, but once they reached about 18" I transplanted them into the soil and they've taken off. No flowers yet - but they are looking great so far.

          • Primary use:
          • Personal
           
          5.0

          Mammoth Monsters!

          By 

          from Canton, TX

          About Me Avid Gardener

          Verified Reviewer

          Pros

          • Accurate Instructions
          • Attractive
          • Fragrant
          • Hardy
          • Healthy

          Cons

            Best Uses

            • Garden
            • Outdoors

            Comments about American Meadows Sunflower Seeds Mammoth Grey Stripe:

            The best Sunflowers ever! Here in Texas we have plenty of sun and rain and when I added your Mammoth Grey Stripe Sunflower seeds to that mix the ground exploded. Towering plants each with their own bursting sun reigning regally above all other flowers.

            • Primary use:
            • Personal

            (1 of 1 customers found this review helpful)

             
            4.0

            I would buy this product again.

            By 

            from Huntsville, AL

            About Me Avid Gardener

            Verified Reviewer

            Pros

            • Attractive
            • Hardy
            • Healthy
            • Versatile

            Cons

              Best Uses

              • Garden

              Comments about American Meadows Sunflower Seeds Mammoth Grey Stripe:

              I planted the sunflowers seeds in early April in my vegetable garden. With the first sunflower seeds, I did not have as much success as I would have liked. I soaked the sunflower seeds for 24 hours and replanted. I now have sunflowers that are six feet high. I am using the sunflowers for companion plants for my cucumbers. The sunflowers' sturdy stalks provide support for the cucumber vines.

              • Primary use:
              • Personal
               
              5.0

              Summer Beauty

              By 

              from Spokane, WA

              About Me Avid Gardener

              Verified Reviewer

              Pros

              • Long Bloom Time
              • Low Maintenance

              Cons

                Best Uses

                • Border Control
                • Large Areas

                Comments about American Meadows Sunflower Seeds Mammoth Grey Stripe:

                Summer in the NW is all about your sunflowers. Addition to our 12 acre property and our work to create a meadow.

                 
                4.0

                Great for some, not for me.

                By 

                from Hampton Roads, VA

                About Me Avid Gardener

                Verified Reviewer

                Pros

                • Large Bulb Size
                • Long Bloom Time
                • Low Maintenance
                • Reliable Growth

                Cons

                • Susceptible to Pests

                Best Uses

                  Comments about American Meadows Sunflower Seeds Mammoth Grey Stripe:

                  I planted these alongside a mixture. I had so many sunflowers come up and I found myself in awe. The downside is that none of THESE popped up; at least not for me. I gave a seedling to my friend and his did so well! I'm not blaming the seed as much as I am the conditions. His garden receives south-facing sunlight all day and is backed by a brick wall. My guess is that, with the right conditions, he had much better luck with a single sprout than I did with several handfuls. I couldn't possibly give this a negative review because I've seen the final result. They are beautiful and make such a statement. Just be sure they get all the sunlights and the birds don't get to the seed before the soil does,

                   
                  5.0

                  Mammoth Grey Stripe Sunflower Seeds

                  By 

                  from Orange County, CA

                  About Me LEED AP, Master Gardener

                  Pros

                  • Very visible and tall
                  • Vivid Colors

                  Cons

                    Best Uses

                    • Border Control
                    • Cut Flowers
                    • Erosion Control
                    • Impressive displays
                    • Large Areas

                    Comments about American Meadows Sunflower Seeds Mammoth Grey Stripe:

                    Very pleased to find this quality seed at such a reasonable price.

                    (1 of 1 customers found this review helpful)

                     
                    5.0

                    Great product for a great price!

                    By 

                    from Maine, NY

                    About Me Avid Gardener

                    Verified Reviewer

                    Pros

                    • Price
                    • Quality

                    Cons

                      Best Uses

                      • Cut Flowers
                      • Wedding favors

                      Comments about American Meadows Sunflower Seeds Mammoth Grey Stripe:

                      I bought these to put in small bags as wedding favors, as I wanted to give away something people could use. Best price out there, and quality seeds to boot! Thank you!

                       
                      3.0

                      A West Virginia Review

                      By 

                      from Milton, W.V.

                      About Me Casual Hobbyist, Getting Started

                      Verified Reviewer

                      Pros

                      • Large Bulb Size
                      • Long Bloom Time
                      • Low Maintenance

                      Cons

                      • Susceptible to Pests

                      Best Uses

                      • Border Control
                      • Cut Flowers
                      • Erosion Control
                      • Large Areas

                      Comments about American Meadows Sunflower Seeds Mammoth Grey Stripe:

                      I bought 5 lbs. of seeds for use as decoration on the campground that my family owns and operates. I used aprox. 3 lbs. along a retaining wall for a swim lake that also borders the adjacent property. The others I used in front of a barn for decor. The results were varied to say the least. All of the seeds planted seemed to sprout with no problem at all. All were evenly spaced in rows where planted. Along the side of the barn I had excellent results with the seeds. almost every plant reached between 8-10 feet with blooms of almost a foot in width.(Until a thunderstorm destroyed them... but they looked great and I still harvested the seeds) However, the ones along the bank of the pond took twice as long to grow. Some of them never grew higher than two feet while some reached 7 feet. The blooms weren't nearly as impressive. All in all I would purchase again and most likely will for the 2011 season.

                       
                      5.0

                      Mammoth Grey Stripe sunflower, The King

                      By 

                      from Emergration Canyon, UT

                      About Me Getting Started

                      Verified Reviewer

                      Pros

                      • Attracts snogbirds
                      • Edible Seeds
                      • Good for privacy screens
                      • Grows Fast
                      • Largest Flower I Ever saw
                      • Long Bloom Time
                      • Low Maintenance
                      • Reliable Growth
                      • Vivid Colors

                      Cons

                      • Susceptible to Pests

                      Best Uses

                      • Border Control
                      • Large Areas
                      • Seeds

                      Comments about American Meadows Sunflower Seeds Mammoth Grey Stripe:

                      Very easy to grow but very beautiful too! They are great for kids because of how high and big they get, but also because of how easy(kids like to watch plants grow but wont help take care of them normaly) they are to take care of! I have a big open field in my backyard that overlooks a large home that can see everything we do, so we also planted them to block the other houses view! The seeds taste great rosted with salt! They makes songbirds come in flocks:)! A big problem is that bids and pests will eat them none stop, put cheese cloth or nylon sock over the head of the plant to prevent this! If you do want to eat the seeds cut the head off(You need a tall guy to reach the head normaly, they get to 12ft. sometimes) then let them dry for a couple of days, then hit the back with a hammer or rub two heads! I would give them a 6 out of 5 just because of how they look and grow overall!

                       
                      5.0

                      i love sunflowers, and these are great!

                      By 

                      from indiana

                      About Me Getting Started

                      Verified Reviewer

                      Pros

                      • Accurate Instructions
                      • Attractive
                      • Fragrant
                      • Hardy
                      • Healthy
                      • Versatile

                      Cons

                        Best Uses

                        • Outdoors

                        Comments about American Meadows Sunflower Seeds Mammoth Grey Stripe:

                        these are super easy to grow and they look great!

                        • Primary use:
                        • Personal

                        (1 of 1 customers found this review helpful)

                         
                        5.0

                        Super Cool, Easy to Grow, Massive!!!

                        By 

                        from Port Saint Lucie, FL

                        About Me Avid Gardener

                        Verified Reviewer

                        Pros

                        • Accurate Instructions
                        • Attractive
                        • Hardy
                        • Healthy

                        Cons

                          Best Uses

                          • Garden
                          • Outdoors

                          Comments about American Meadows Sunflower Seeds Mammoth Grey Stripe:

                          Easy to Grow and no maintanance required. Just stick the seed in the ground and watch them grow.

                          • Primary use:
                          • Personal

                          Displaying reviews 1-14

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                          USDA Hardiness Planting Zones

                          To determine if a plant is sufficiently cold hardy, the USDA created numbered zones indicating winter low temperatures; the lower the zone number the colder the winter.

                          • If the coldest winter temperature expected in your area is -15°F (zone 5) then any plants rated zones 3-5 will survive the winter temperatures in your area.
                          • If you live in very warm winter areas (zones 9-11) plants with zones 3-4 ratings are not recommended. The lack of freezing winter temperatures do not provide a time for winter dormancy (rest).

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