Cosmos Flowers

Tall, bushy with large profuse flowers. An old fashion favorite that attracts all the butterflies and hummingbirds

Chocolate Cosmos February 25, 2012

Filed under: annuals,flower gardening,Uncategorized — patoconnor @ 4:07 pm
Tags: , , ,

I am back after a couple years of illness.  

When I first set up this blog and posted an article with chocolate cosmos in it, I have received many requests for information on where to buy them.

From the Spring Hill Nursery:

Exceptional Fragrance Attracts Butterflies!

The alluring, strong chocolate fragrance of this sun-loving, bushy perennial is intriguing! From midsummer into fall these velvety, deep burgundy, 1 ½ to 2″ flowers bloom for weeks atop slender 10-15″ tall stems. Superb as a container plant; outstanding as a cut flower. #1 field-grown plants. Cosmos atrosanguineum 

Zones: 7-10
Light: Full Sun 
Width: 12-15″ 
Deer tend to avoid. 

From Wikipedia:

Cosmos atrosanguineus (Chocolate Cosmos) is a species of Cosmos, native to Mexico, where it is extinct in the wild. The species was introduced into cultivation in 1902, where it survives as a single clone reproduced byvegetative propagation.

It is a herbaceous perennial plant growing to 40-60 cm tall, with a fleshy tuberous root. The leaves are 7-15 cm long, pinnate, with leaflets 2-5 cm long. The flowers are produced in a capitulum 3-4.5 cm diameter, dark red to maroon-dark brown, with a ring of six to ten (usually eight) broad ray florets and a center of disc florets; they have a light vanillin fragrance (like many chocolates), which becomes more noticeable as the summer day wears on.

BTW,  I still have yet to see these in any garden shop.  It is a shame too, as I imagine they would be quickly snapped up by we flower gardeners.

Here is a list of some providers:

Chocolate Flower Farm

Thompson & Morgan

Monrovia Horticulture

Territorial Seed Company

Forestfarm (Williams Oregon)

Mailing Address:
990 Tetherow Rd
Williams, Oregon 97544-9599 (United States)

Phone: (541) 846-7269
Fax: (541) 846-6963

Joy Creek Nursery

Mailing Address:
20300 NW Watson Road
Scappoose, Oregon 97056 (United States)

Phone: (503) 543-7474
Fax: (503) 543-6933

Sweet Nectar Nursery

Mailing Address:
18121 NE 128th Ave.
Battle Ground, Washington 98604 (United States)

Phone: (360) 624-4901

I couldn’t find any in Burpee’s, Park’s, or Johnny’s  


How to Grow Chocolate Cosmos October 30, 2008

    How to Grow Chocolate Cosmos  

Chocolate cosmos (Cosmos atrosanguinea) is both nose and eye candy for your garden. When it’s in full bloom, mature blossoms on long, slender stems look like candy kisses on a stick and fill the late afternoon with the sweet scent of vanilla tinged chocolate. New blossoms hug the foliage of the plant, nearly concealing it with their numbers! Add to that the sweet chocolate fragrance and you end up with something very special.

Although chocolate cosmos is endangered in the wild, transplants are easily found at most nurseries and garden centers in the spring. However, gardeners who are inexperienced in how to grow chocolate cosmos may overlook what seem to be small, messy tangles of miniature dahlia leaves, unaware that once established, prolific blossoms nearly conceal the foliage. Once in bloom, chocolate cosmos blossoms continuously throughout the summer into the first frosts of autumn.

If you’re planning a gothic garden, chocolate cosmos is the plant for you. Sometimes referred to as black cosmos, dark maroon blossoms are so deep in color that they appear brown/black in late afternoon and evening.

A native of Mexico, the chocolate cosmos is a half-hardy perennial and a sun loving plant that is moderately drought tolerant.

You’ll most easily grow chocolate cosmos from transplants purchased at your local garden center or nursery. Large clumps of established plants can also be divided to provide as many as three or four transplants.

Plant chocolate cosmos in organically rich, well-drained soil in a location that gets full sun. Keep the transplants moist until they established roots and you see the beginnings of some new growth.

In the fall, when foliage dies back, cut plants back to about two inches from the root and over-winter them in a frost-free area. Chocolate cosmos is hardy in zones 7-10. In these zones, you may opt to cover the plants with a cloche to protect them from danger of frost.

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Cosmos Picture Gallery

      Cosmos Pictures       


Pink/Maroon  Light Purple   Light Pink     White          


 White Pink     White Purple    Orange          Pink                 Purple


Purple White    Yellow            White             Dark Purple   Pink Maroon


Dark Red      Chocolate    Candy Striped       Red