About Cosmos
This Mexico native is one of the simplest flowers to grow, and they are suitable for all zones. Since they reseed themselves easily, they make perfect additions to wildflower meadows or naturalized areas. Children will love planting their cosmos seeds and watching them grow taller than they are!
When to Plant Cosmos Seeds
Plant Cosmos in the Spring when the soil can be worked.
Where to Plant Cosmos Seeds
Sow your Cosmos seeds in the full sun to partial shade. As cosmos flowers are very adaptable, they can thrive in average to poor soil quality, and they are tolerant to dry conditions.
How to Plant Cosmos Seeds
Cosmos seeds require light to germinate, so be careful not to cover them too much when planting. Learn more about germination light requirements here.
Scatter cosmos seeds outdoors after there is no longer a danger for frost. Seeds can be covered ¼ inch since they need light to germinate. Germination will usually occur in just 3 to 5 days, but it can take up to 2 weeks.
How to Care for Cosmos
Once started, cosmoses require virtually no attention. You can add a general purpose fertilizer once or twice a season. If a plant grows very tall and is not planted in a wind protected area, it may require staking. If you want blooms all summer long, dead head the old blooms.
Customer Photos
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Crazy for Cosmos | Diane from Louisiana
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First cosmo of the season! | Taylor from California
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my cosmo being pollinated, with some ladybug friends and in the rain | Angélica from Florida
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Brilliant Color in January | Connie from Florida
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Cosmos in my garden | Laura from Washington
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Last bouquet of the season | Diane from Minnesota
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New Raised Beds | Mary Ann Gildroy from Montana
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Horse Barn w/Cosmic Zen & Sunflowers | Melanie Coley from North Carolina
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Bountiful Bouquet | Karina from Vermont
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Bed of Wildflowers | Kristen Ryan from Oklahoma
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Xanthos Cosmos- unique! | Ingrid Ann from Maine
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Cut flowers from my garden! | Kerry from Colorado
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Holly’s Hobbie | Holly from Florida
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Bee Utiful cosmos | Wenda from Ohio
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Garden Cosmos | Karen from New York
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Wildflower Meadow | Roberta from West Virginia
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Cosmos at Night | Destin from Alabama
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Make it Wild | Mindy from Florida
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Dream field | Teryn from Nebraska
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Early summer bounty! | Alexa from Ohio
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September Harvest Bouquet | Elizabeth from Pennsylvania
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Cosmos in the sky | Gena from Connecticut
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Apricot lemonade cosmos | Lynn from Michigan
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Cosmos cosmos everywhere | Ren from Ohio
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Arrangement with mixed flowers | Erin from California
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Hollyhock and cosmos and teal, oh my! | Pam from Nebraska
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Cosmos with my teal flower shed bench | Pam from Nebraska
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Summer Vibes | Sarah Marcotte from Massachusetts
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Field of blooms | Sharon from North Carolina
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Happy Bees | Ali from North Carolina
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Happy Pollinators | Ali from North Carolina
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Fall Beauty | Jesse Stratton from Minnesota
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Cut Flowers | Ashley Stratton from Minnesota
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Cosmos | Eric from Nevada
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Zinnia and Cosmos | Karen Tyrrell from Virginia
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Stunning Cosmos | Janine Peak from North Carolina
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Cutting garden | Mimi Dickinson from Maryland
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Pretty in Pink Wild Cosmos | Nelson from New Mexico
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Blue skies and Cosmo | Gena from Connecticut
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Cosmo and blue skies | Gena Murray from Connecticut
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Early fall bouquet | Katie Boyette from North Carolina
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Nothing but Blue Skies and Cosmos! | Kristin from Virginia
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My wildflower | Holly Booker from Tennessee
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My two row flower “field” and my favorite visitor | Nicole from Idaho
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Kristina’s fresh cuts from our Garden of Eden | Ona Stewart from California
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Pollination! | Christina from Colorado
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Flowers Reaching the Sky ! | Christina from Colorado
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Afternoon visitor, Monarch on Sulfur Cosmos | Linda LaBelle from Virginia
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Zen Flowers | Diana Sanders from Texas
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Cosmos in my Garden | Christina Olson from Nebraska
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Dramatic Cosmos | EMILIA from Virginia
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A Blushing Bouquet! | Ledley from West Virginia
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My personal Eden made from Fairytale Flower Seed Mix | Ketra from Illinois
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Pollinator gardens do a garden good | Jen from North Carolina
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Field of yellow! | Martha from Minnesota
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Beautiful Pink Cosmos | Terry from Connecticut
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Florida Wildflower Bloom | Kim from Florida
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Cosmos flower in my garden (Psyche) | Patricia from Delaware
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Cutting Garden Outside my Bedroom | Lyn from Georgia
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Cosmo garden | Michelle from California
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My cosmo garden | Michelle from California
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Cosmos and Zinnias | David Stewart from North Carolina
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Alice in the cosmos | Kelli from Virginia
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Summer Love | Chrmn_l@yahoo.com from Massachusetts
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Sleeping Bees | Nannety from Indiana
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Butterfly visiting my cosmos | Stacey from North Carolina
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Purple Haze | Cindy Williams from Tennessee
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A country girl’s garden | Judy from South Carolina
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Labor of love | Stephanie from Illinois
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My wife bloom garden begin!!! | Martin from
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Wild cosmos mix | Noel from New Mexico