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Height: 24-36 in. (60-90 cm) 36-48 in. (90-120 cm)
Spacing: 18-24 in. (45-60 cm)
Hardiness: Not Applicable
Sun Exposure: Full Sun
Danger: Parts of plant are poisonous if ingested
Bloom Color: Pink Red White/Near White
Bloom Time: Late Spring/Early Summer Mid Summer Late Summer/Early Fall Mid Fall
Foliage: Blue-Green Shiny/Glossy-Textured
Other details: This plant is attractive to bees, butterflies and/or birds Drought-tolerant; suitable for xeriscaping Average Water Needs; Water regularly; do not overwater Self-sows freely; deadhead if you do not want volunteer seedlings next season
Soil pH requirements: 6.6 to 7.5 (neutral) 7.6 to 7.8 (mildly alkaline) 7.9 to 8.5 (alkaline)
Propagation Methods: From seed; sow indoors before last frost From seed; direct sow after last frost
Seed Collecting: Allow seedheads to dry on plants; remove and collect seeds Properly cleaned, seed can be successfully stored
I have grown cosmos for years....the flower is my husband's and son's birthday month flower. I also notice them all over my little town in the Ojai Valley. For some reason, they are blooming earlier this year. Generally they bloom in October (when they are supposed to, because they are the flower for the month of October!). Easy to grow, I even have some popping up from seed in my cactus pots. Seems like the purple variety is the most durable and prolific. Like the foliage as well...feathery. Easy to grow, friendly to have around....not demanding in any way.
On Jul 26, 2006, lemmons75 from Rock Hill, SC wrote:
This plant is unlike anything I have ever come across.It was giving to me by a neighbor in a seed pack (with other seeds).It first came up it was 2 ft tall but no flowers.I transplanted it twice and now it sets alone in a 5 gal. bucket with awsome pink flowers.I'm 6ft tall and it is a bit taller than me.I have ended up tieing it up to keep it from falling over.This is one plant that I will plant next year and give some seeds away.
On Aug 26, 2005, tiffanya from Sumner, WA (Zone 8a) wrote:
Cosmos are very easy to grow. I sow along the fenceline each spring. In 2004, they grew very tall (most measured at 9 feet high), mostly due to a combination of steer manure in the garden and the neighbor's active sprinklers sharing water along the fenceline. It was literally a jungle of cosmos. I kept dead-heading them, and they bloomed pretty much from July into October.
I especially love the star-shape pistil/stamen area as the pollen is released...very pretty. The dragonflies also appear to be attracted to the color...?
On Jun 24, 2005, PurplePansies from Deal, NJ (Zone 7a) wrote:
I believe cosmos to be a "must have" for every garden. They are a beautiful flower.... now with so many fun varieties .... and so easy to grow! Simply scatter seeds in the garden and they will grow like mad! That being said they are also not harmfully invasive. Birds also love the seeds. Many of its colors blend nicely with other colors in the garden. Attractive divided foliage. A winner all around. Try it you will not be dissapointed! :)
On Jan 16, 2005, LilyLover_UT from Ogden, UT (Zone 5b) wrote:
Cosmos are easy to grow from seed sown directly in the garden in mid to late spring. They also self-sow vigorously, and they attract beneficial insects.
On Nov 7, 2000, jody from MD &, VA (Zone 7b) wrote:
This species of cosmos is an annual, grows 5' to 6' high. Flowers in summer and autumn in various colors of pink, red, white and purple. May need staking. Best cultivated in sun, with average soil. Not very frost hardy.
Regional...
This plant has been said to grow in the following regions:
Auburn, Alabama Dothan, Alabama Little Rock, Arkansas Merced, California Murrieta, California Oak View, California San Jose, California Stockton, California New Haven, Connecticut Lewes, Delaware Seaford, Delaware Clermont, Florida Gainesville, Florida Vero Beach, Florida Braselton, Georgia Douglasville, Georgia Hawkinsville, Georgia Stone Mountain, Georgia Kailua, Hawaii Lewiston, Idaho Nilwood, Illinois Peoria, Illinois Columbus, Indiana Lansing, Kansas North Billerica, Massachusetts Ann Arbor, Michigan Deer River, Minnesota Munsonville, New Hampshire Albuquerque, New Mexico Selden, New York Fletcher, North Carolina Massillon, Ohio Reynoldsburg, Ohio Springfield, Ohio Ashland, Oregon Brookhaven, Pennsylvania Rock Hill, South Carolina Abilene, Texas Austin, Texas Fort Worth, Texas Houston, Texas San Antonio, Texas Santa Fe, Texas Tremonton, Utah Danville, Virginia Kalama, Washington Olympia, Washington Madison, Wisconsin
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