Sulphur Cosmos Seeds

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The perfect addition to any sunny meadow or garden, Sulphur Cosmos light up the mid-season garden, blooming a stunning orange and yellow all the way into the fall. Sulphur Cosmos are extremely easy to grow in any region and attract a variety of hummingbirds and butterflies to the garden. The bright blooms also make for gorgeous cut bouquets! All of the seed we handle at American Meadows is non-GMO, neonicotinoid-free and guaranteed to grow. Annual.

Zones 1 - 10
Advantages
Hummingbirds & Butterflies
Hummingbirds & Butterflies
Easy to Grow
Easy to Grow
Cut Flowers
Cut Flowers
Containers
Containers
Light Requirements
Full Sun
Full Sun
Half Sun / Half Shade
Half Sun / Half Shade
Mature Plant Size 36-48 inches tall
Bloom Time Summer to fall
SKU CSSG

Plant Information

A favorite for flower-pressing crafts. Color varies from marigold/lemon yellow to bright orange. See also more familiar pink/white cosmos species, Cosmos bipinnatus.

The Cosmos Craze: New rage for an old favorite. When it comes to annuals, probably no plant adds more color than cosmos. Your grandmother grew it, today states plant masses along roadsides, and everybody loves it. (Birds love it too, especially goldfinches.) But there's always been one big problem--it's tall, sometimes very tall--up to 6 or 7 feet.

In the right setting, say a wildflower meadow in late summer, nothing's more beautiful than a sea of these big ferny plants waving in the wind, loaded with big blooms in pink, white and maroon. But in gardens, most people prefer shorter flowers. So for awhile, some relegated the "tall" cosmos to the group that's usually called "old fashioned flowers"--beautiful, surely, but a bit tall and rangy for our more sophisticated flower borders today.

Enter the hybridizers. With all that color and such ease of care to work with, they have had a heyday with cosmos. Today, there are all sorts of variations on the originals, some with new-style flowers, and others with simply the classic blooms on shorter plants. All require full sun, and are among the simplest plants on the planet to grow from seed. By the way, even the seeds of cosmos are distinctive; they look like miniature pine needles.

The originals are wildflowers, of course, and are native to our own southwest and more commonly, Mexico. This tells you cosmos don't mind hot dry, conditions. In fact, some consider cosmos desert plants. But they're incredibly adaptable. And ever since some plant explorer gathered seeds from the rocky wilds of Mexico and transplanted them into "good garden soil," the world has known that they not only thrive, but enjoy our loamy, well-watered gardens. And if they're not fertilized too much, they rapidly develop into large branching plants with deep green fern-like leaves. If you have a dry season, cosmos plants don't care, and revert to their drought-tolerant roots. Best of all, no matter where they're growing, they cover themselves with more and more wide (up to 4") daisy-like blooms from midsummer on. Only a hard frost stops the cosmos parade. They're fantastic as a blooming screen, or a background for shorter plants. And the big bonus: a grand stand of this garden classic in late summer can provide months of long-stemmed cut flowers for a whole neighborhood.

The Originals. There are scores of native cosmos species, most all native to the Americas, but there are only two that have entered our gardens in a big way:
1. Cosmos bipinnatus, the big one. This is the granddaddy of them all. Hailing from Mexico, it's one of the few wildflowers that is so beautiful it was taken into gardens long ago just as it is in the wild. The old name for this garden classic is simply "Wild Cosmos", "Cosmos Sensation," or "Sensation Mix," since the seeds always produce plants blooming in pastel pink, white, and deep red or maroon, all with bright yellow centers. These are the tall, (to 6 or 7 ft.) graceful cosmos plants of your grandmother's garden.
2. Cosmos sulphureus, the other cosmos. This one's shorter, with more bushy plants and somewhat smaller yellow (to orange) semi-double flowers. It's often called "Sulphur Cosmos" or "Orange Cosmos," and an old variety with particularly glowing orange blooms is called "Bright Lights." The flowers of these often remind me of open-style marigolds on larger plants.

The New Cosmos. Today, the old standard "mixture" flowers of C. bipinnatus have been segregated, and the plants grow from only 3 to 5 feet. So if you particularly like the old pastel pinks, there's "Pinkie," for the pure white, "Purity," and for the old deep rose or maroon, "Radiance." Even though the plants are shorter, all the flowers are still big and beautiful with the familiar bright yellow centers. And this new group doesn't stop with the old basic colors. "Gloria" is a beauty in pink with red-flared centers. And "Daydream" gives you the old pastel pink, but with a darker center flare and darker pink veins all through the petals.

If 3-5 feet is still too tall for you, choose the "Short Cosmos Mix" which gives you all three of the old mixture colors at just 2 to 4 ft. And yes, the flowers are still full size.

Want more variety? Pick "Dazzler" and enjoy unique blunt-tipped daisies in true red, still with the dazzling yellow center, on plants to 5 ft. Then there's the most unusual of all, "Seashells," a big hit with cosmos lovers--its hot pink petals are curled upward at the edges, giving the blooms a frilly look.

And here's my favorite: "Picotee." It gives you full-size daisy blooms in white with the end of each petal looking as though it's been dipped into a rich red paint--and all that jazz is on plants never over 4 feet. This one, like all the others, creates spectacular color in the garden, and even more in a vase.

Associated SKUs
CSSG
CSSQP (1/4 Pound)
CSSLB (1 Pound)
CSSLB5 (5 Pounds)
CSSLB10 (10 Pounds)
Common Name Sulphur Cosmos Mix
Botanical Name Cosmos sulphureus Mix
Seed Life Cycle Annuals
Light Requirements Full Sun, Half Sun / Half Shade
Flower Color Orange, Yellow
Mature Height 36-48 inches tall
Bloom Time Summer to fall
Ships As Seed
Coverage 1/4 lb covers 777 sq ft.
1 lb covers 3,110 sq ft.
5 lbs covers 15,550 sq ft.
10 lbs covers 31,100 sq ft.
Seeds Per Pound 63,049
Soil Moisture Dry, Average, Well Draining
Soil Type Sandy Soil, Loamy Soil, Drought/Dry Soil
Native To North America
Native To American Southwest and Mexico
Ideal Region Northeast, Southeast, Midwest, Southwest, West, Pacific Northwest
Zones 1, 2, 3, 4, 5, 6, 7, 8, 9, 10
Advantages Hummingbirds & Butterflies, Easy to Grow, Cut Flowers, Containers
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 MeadowsSulphur Cosmos Seeds
 
4.5

(based on 13 reviews)

Ratings Distribution

  • 5 Stars

     

    (8)

  • 4 Stars

     

    (4)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (0)

85%

of respondents would recommend this to a friend.

Pros

  • Attractive (6)
  • Low maintenance (6)
  • Hardy (5)
  • Healthy (4)
  • Long bloom time (3)

Cons

No Cons

Best Uses

  • Large areas (6)
  • Outdoors (4)
  • Garden (3)
    • Reviewer Profile:
    • Avid gardener (6)
    • Primary use:
    • Personal (6)

Most Liked Positive Review

 

Color, Color Everywhere

Scatter sow and stand back! One of the easiest flowers we've ever planted brightening up parking islands, borders and beds. If allowed to reseed, the spent foliage and seedheads may not be to...Read complete review

Scatter sow and stand back! One of the easiest flowers we've ever planted brightening up parking islands, borders and beds. If allowed to reseed, the spent foliage and seedheads may not be to everyone's liking. The seed can easily be gathered by hand as well.

VS

Most Liked Negative Review

 

Way too tall for the average garden

I believe there was a mixup in seeds. These exhibit the habit attributed to the Cosmos bipinnatus, growing 7 foot in my garden.

I believe there was a mixup in seeds. These exhibit the habit attributed to the Cosmos bipinnatus, growing 7 foot in my garden.

Reviewed by 13 customers

Displaying reviews 1-13

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(1 of 1 customers found this review helpful)

 
4.0

Strong Growers - Half Are Yellow, Half Are Orange

By 

from Chicago, IL

About Me Getting Started

Pros

  • Easy To Grow

Cons

    Best Uses

      Comments about American Meadows Sulphur Cosmos Seeds:

      Reliably germinated and are doing great. You will get a mix of colors between yellow and orange. When you get one that really takes off it will look a little "weedy" when it gets to full size - but the prodigious blooms are well worth it!

      • Primary use:
      • Personal

      (1 of 1 customers found this review helpful)

       
      5.0

      Versatile flower

      By 

      from Cortlandt Manor, NY

      Verified Reviewer

      Pros

      • Long Bloom Time
      • Low Maintenance
      • Vivid Colors

      Cons

      • Needs Extensive Watering

      Best Uses

      • Containers
      • Large Areas

      Comments about American Meadows Sulphur Cosmos Seeds:

      This is a dead-easy seed to sow which is not fussy on soil-type provided it gets ample sunshine.

      I used it in both containers and hanging-baskets since, although not a weeping or hanging variety, it is stunning to see six feet plus flowers of vibrant orange shades (five foot hanging baskets plus two foot of plant). I planted using Coconut-coir and scattered seeds densely atop the compost and the flowers were profuse in growth. I had to water the 12" pot daily with about a litre of rainwater otherwise the plants sagged under the heat but this may have been an issue with the coir rather than the plant themselves or the numbers within the pots. Sulphur Cosmos is very reliable in soil borders in full-sun.

      (1 of 1 customers found this review helpful)

       
      4.0

      Bright orange and easy Cosmos

      By 

      from Glencoe, IL

      About Me Professional Landscaper

      Verified Reviewer

      Pros

      • Long Bloom Time
      • Low Maintenance
      • Reliable Growth

      Cons

      • Slow Growth

      Best Uses

      • Cut Flowers
      • Large Areas

      Comments about American Meadows Sulphur Cosmos Seeds:

      We used the orange Cosmos in a large meadow planting for easy and vivid color to be seen from a distance

      (1 of 1 customers found this review helpful)

       
      5.0

      Pleasant Surprize

      By 

      from Pagosa Springs, Co

      About Me Casual Hobbyist

      Pros

      • Vivid Colors

      Cons

        Best Uses

        • Large Areas

        Comments about American Meadows Sulphur Cosmos Seeds:

        Planted in Colorado. Nice orange color, and work best in a group.

         
        5.0

        soon!

        By 

        from Nahant, MA

        About Me Avid Gardener

        Verified Reviewer

        Pros

        • Low Maintenance
        • Pest Resistant
        • Reliable Growth

        Cons

          Best Uses

          • Containers
          • Cut Flowers
          • Erosion Control
          • Large Areas
          • Raised Beds

          Comments about American Meadows Sulphur Cosmos Seeds:

          sowed the seeds last fall. so far, i have nice strong plants and lots of buds...just no blooms yet. soon, i hope!

           
          4.0

          Nice seeds..very tall and bright..

          By 

          from Indian Trail, NC

          About Me Master Gardener

          Pros

          • Long Bloom Time
          • Low Maintenance
          • Reliable Growth
          • Vivid Colors

          Cons

            Best Uses

            • Large Areas
            • Raised Beds

            Comments about American Meadows Sulphur Cosmos Seeds:

            Strong / tall plants with great color...

            (2 of 2 customers found this review helpful)

             
            2.0

            Way too tall for the average garden

            By 

            from Reston, VA

            About Me Avid Gardener

            Verified Reviewer

            Pros

            • Low Maintenance
            • Pest Resistant

            Cons

              Best Uses

              • Large Areas

              Comments about American Meadows Sulphur Cosmos Seeds:

              I believe there was a mixup in seeds. These exhibit the habit attributed to the Cosmos bipinnatus, growing 7 foot in my garden.

               
              5.0

              Success!

              By 

              from WEST MILFORD,NJ

              About Me Master Gardener

              Verified Reviewer

              Pros

              • Attractive

              Cons

                Best Uses

                • Outdoors

                Comments about American Meadows Sulphur Cosmos Seeds:

                "Maple Point",passed by thousands of cars per day,now a beautiful meadow featuring orange cosmos-dozens of compliments.

                • Primary use:
                • Personal

                (2 of 2 customers found this review helpful)

                 
                5.0

                Color, Color Everywhere

                By 

                from Rumson, NJ

                About Me Avid Gardener

                Verified Reviewer

                Pros

                • Attractive
                • Delicate foliage
                • Fast Growing
                • Hardy
                • Prolific self-seeder
                • Quick germinating
                • Stellate seedheads
                • Vibrant blooms

                Cons

                  Best Uses

                  • Borders
                  • Garden
                  • Low water areas
                  • Sunshine

                  Comments about American Meadows Sulphur Cosmos Seeds:

                  Scatter sow and stand back! One of the easiest flowers we've ever planted brightening up parking islands, borders and beds. If allowed to reseed, the spent foliage and seedheads may not be to everyone's liking. The seed can easily be gathered by hand as well.

                  • Primary use:
                  • Business

                  (2 of 2 customers found this review helpful)

                   
                  5.0

                  Simply Spectacular

                  By 

                  from Florida

                  About Me Getting Started

                  Verified Reviewer

                  Pros

                  • Accurate Instructions
                  • Attractive
                  • Hardy
                  • Healthy
                  • Low Maintenance

                  Cons

                    Best Uses

                    • Garden

                    Comments about American Meadows Sulphur Cosmos Seeds:

                    I over seeded on purpose in a large, sparse bed that gets over 6 hours of full sun a day. The result was unbelievable! People actually stopped their cars to ask 'how did you do that?' Even better, except for a little fertilizing, I did nothing.

                    • Primary use:
                    • Personal
                     
                    5.0

                    Kimsmaple

                    By 

                    from Middletown, NY

                    About Me Avid Gardener

                    Pros

                    • Attractive
                    • Hardy
                    • Healthy
                    • Memory

                    Cons

                      Best Uses

                      • Fence
                      • Outdoors

                      Comments about American Meadows Sulphur Cosmos Seeds:

                      I planted last year and I found a lot of baby plants come out along my fence.

                      • Primary use:
                      • Personal

                      (2 of 2 customers found this review helpful)

                       
                      5.0

                      LOVE COSMOS

                      By 

                      from Southern Indiana

                      About Me Avid Gardener

                      Verified Reviewer

                      Pros

                      • Accurate Instructions
                      • Attractive
                      • Hardy
                      • Healthy
                      • Lightweight
                      • Versatile

                      Cons

                        Best Uses

                        • Outdoors

                        Comments about American Meadows Sulphur Cosmos Seeds:

                        Cosmos do so well in poor soil, the hot August sun, drought resistant, and they grow and grow!

                        • Primary use:
                        • Personal

                        (2 of 2 customers found this review helpful)

                         
                        4.0

                        Easy & reliable, year after year.

                        By 

                        from Jay, New York

                        About Me Avid Gardener

                        Verified Reviewer

                        Pros

                        • Attractive
                        • Hardy
                        • Healthy
                        • Versatile

                        Cons

                          Best Uses

                          • Garden
                          • Outdoors

                          Comments about American Meadows Sulphur Cosmos Seeds:

                          For the past 10 years I have underplanted my sunflower border with cosmos sulphureus. I love the way they dance in the wind!

                          • Primary use:
                          • Personal

                          Displaying reviews 1-13

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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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