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

Apricot lemonade cosmos | Lynn from Michigan

Cosmos cosmos everywhere | Ren from Ohio

Arrangement with mixed flowers | Erin from California

Hollyhock and cosmos and teal, oh my! | Pam from Nebraska

Cosmos with my teal flower shed bench | Pam from Nebraska

Summer Vibes | Sarah Marcotte from Massachusetts

Field of blooms | Sharon from North Carolina

Happy Bees | Ali from North Carolina

Happy Pollinators | Ali from North Carolina

Fall Beauty | Jesse Stratton from Minnesota

Cut Flowers | Ashley Stratton from Minnesota

Cosmos | Eric from Nevada

Zinnia and Cosmos | Karen Tyrrell from Virginia

Stunning Cosmos | Janine Peak from North Carolina

Cutting garden | Mimi Dickinson from Maryland

Pretty in Pink Wild Cosmos | Nelson from New Mexico

Blue skies and Cosmo | Gena from Connecticut

Cosmo and blue skies | Gena Murray from Connecticut

Early fall bouquet | Katie Boyette from North Carolina

Nothing but Blue Skies and Cosmos! | Kristin from Virginia

My wildflower | Holly Booker from Tennessee

My two row flower “field” and my favorite visitor | Nicole from Idaho

Kristina’s fresh cuts from our Garden of Eden | Ona Stewart from California

Pollination! | Christina from Colorado

Flowers Reaching the Sky ! | Christina from Colorado

Afternoon visitor, Monarch on Sulfur Cosmos | Linda LaBelle from Virginia

Zen Flowers | Diana Sanders from Texas

Cosmos in my Garden | Christina Olson from Nebraska

Dramatic Cosmos | EMILIA from Virginia

A Blushing Bouquet! | Ledley from West Virginia

My personal Eden made from Fairytale Flower Seed Mix | Ketra from Illinois

Pollinator gardens do a garden good | Jen from North Carolina

Field of yellow! | Martha from Minnesota

Beautiful Pink Cosmos | Terry from Connecticut

Florida Wildflower Bloom | Kim from Florida

Cosmos flower in my garden (Psyche) | Patricia from Delaware

Cutting Garden Outside my Bedroom | Lyn from Georgia

Cosmo garden | Michelle from California

My cosmo garden | Michelle from California

Cosmos and Zinnias | David Stewart from North Carolina

Alice in the cosmos | Kelli from Virginia

Summer Love | Chrmn_l@yahoo.com from Massachusetts

Sleeping Bees | Nannety from Indiana

Butterfly visiting my cosmos | Stacey from North Carolina

Purple Haze | Cindy Williams from Tennessee

A country girl’s garden | Judy from South Carolina

Labor of love | Stephanie from Illinois

My wife bloom garden begin!!! | Martin from

Wild cosmos mix | Noel from New Mexico