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Growing Non-GMO Sea Shells Cosmos Flower Seeds

Sea Shells Cosmos is a drought-tolerant full-sun performer and most commonly sown directly after the frost but, for earliest blooms, begin the seeds indoors 4-6 weeks before the last frost. Germinate them in a warm area (at least 60F soil temperature) and avoid burying them deeper than the recommended 0.25 inch. Harden off the seedlings gradually and be sure the danger of frost has passed before planting them outdoors. Expect to see blooms in 5-7 weeks that last all summer long!

Deadhead blooms regularly to encourage more flower development and an attractive branching habit. Let some develop into the seed heads towards the end of the season if you wish to collect seeds for next year’s plantings. Once established, these plants require little supplemental water except in severe drought conditions. Until they are fully established, they will benefit from regular irrigations that slowly taper off. Avoid fertilizer for this species. Any amount of fertilization will encourage foliage and not blooms.

Sea Shells Cosmos in the Flower Garden

Cosmos seeds are a favorite for kids or novice gardeners because they are a low-maintenance grow tolerant to hot and dry gardens. Sea Shells Cosmos plants are perfect for large fields, wildflower gardens, and mass plantings but are just as likely to thrive near patios, walkways, and entryways.

Harvesting Sea Shells Cosmos plants

Sea Shells Cosmos plants are perfect if you wish to have a cut flower garden but want to reduce the amount of water required for irrigation. These flowers make charming bouquets all summer long, although individual flowers last about 4-6 days in a vase. To harvest, cut a flower stalk as far down as possible and immediately place it in cool, clean water. They may be harvested in the morning before becoming heat-stressed. Harvesting when buds are cracking but not fully opened is best. Change the water daily for extended color. Flower food is for sale in powder form to add to water, prolonging the blooms’ vitality.

About Sea Shells Cosmos Garden Seeds

Although Cosmos bipinnatus are not considered edible, they are also not considered toxic or poisonous in any way. They won’t be dangerous for children or pets who may accidentally ingest them.

Cosmos flowers are some of the most well-known and classic garden flowers on the market. Originally from Mexico and the Southwest United States, these flowers have become a nostalgic landscaping staple for many cottage gardens worldwide.

Sea Shells Cosmos plants have 2-4 inch wide blooms with tubular petals that will keep popping up all season and draw in a host of pollinators.

This variety of cosmos is considered very low-maintenance and easy to grow, making it the ideal addition to any garden. They are recommended to any gardener with any experience level.

If you love cosmos but can’t fathom placing these larger varieties in your garden, check out our dwarf mix varieties. Although the petal habits are not the same, they are still adorable and perfect for smaller spaces.

Stories From Our Gardeners

"Cottagecore style yards are all I can think about these days! The relaxing and pleasant style is trendy now, and these Sea Shells cosmos flowers fit right in with that motif."

- Lara Wadsworth, True Leaf Market Writer

Sea Shells Cosmos Seeds Per Package:

• 1 lb - Bulk Seeds - Approximately 54,400 Seeds