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Cosmos Seeds - Cupcake Blush
Ombre blush flowers seem to float above the rest of your gardenCosmos Seeds - Cupcake Blush
Ombre blush flowers seem to float above the rest of your gardenRegular price $6.59Regular priceUnit price per -
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Cosmos Seeds - Apricot Lemonade
Dazzling apricot-colored blooms like nothing you've ever seenCosmos Seeds - Apricot Lemonade
Dazzling apricot-colored blooms like nothing you've ever seenRegular price $6.59Regular priceUnit price per -
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Crazy For Cosmos - Cosmos Flower Seed Mix
These 7 varieties are breathtaking when planted en masseCrazy For Cosmos - Cosmos Flower Seed Mix
These 7 varieties are breathtaking when planted en masseRegular price As Low As $12.59Regular priceUnit price per -
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Cosmos Seeds - Xanthos
These buttery blooms are a cut flower garden stapleCosmos Seeds - Xanthos
These buttery blooms are a cut flower garden stapleRegular price $5.79Regular priceUnit price per -
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Wild Cosmos Seeds - Sensation Mix
Cultivate wildness with these prolific bloomersWild Cosmos Seeds - Sensation Mix
Cultivate wildness with these prolific bloomersRegular price As Low As $4.49Regular priceUnit price per -
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Cosmos Seeds - Double Click - White Knight
These fluffy double blooms could pass for pincushion flowersCosmos Seeds - Double Click - White Knight
These fluffy double blooms could pass for pincushion flowersRegular price $6.59Regular priceUnit price per -
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Sulphur Cosmos Seeds - Bright Lights
Vibrant gold and orange blooms illuminate any corner of the gardenSulphur Cosmos Seeds - Bright Lights
Vibrant gold and orange blooms illuminate any corner of the gardenRegular price As Low As $4.49Regular priceUnit price per -
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Cosmos Seeds - Purity
The essential ingredient to any cut flower arrangementCosmos Seeds - Purity
The essential ingredient to any cut flower arrangementRegular price As Low As $4.49Regular priceUnit price per -
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Cosmos Seeds - Rubenza
Mauve and magenta blooms are a rare findCosmos Seeds - Rubenza
Mauve and magenta blooms are a rare findRegular price $5.49Regular priceUnit price per -
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Cosmos Seeds - Cupcake White
Snow-white blooms look almost like crinkled cupcake linersCosmos Seeds - Cupcake White
Snow-white blooms look almost like crinkled cupcake linersRegular price $6.59Regular priceUnit price per -
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Cosmos Seeds (Dwarf Early) - Sensation Mix
Perfect for a light, bright summer bouquetCosmos Seeds (Dwarf Early) - Sensation Mix
Perfect for a light, bright summer bouquetRegular price As Low As $4.49Regular priceUnit price per -
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Cosmos Seeds - Radiance
Glossy pink blooms that are nothing short of mesmerizingCosmos Seeds - Radiance
Glossy pink blooms that are nothing short of mesmerizingRegular price As Low As $4.49Regular priceUnit price per -
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Cosmos Seeds - Dazzler
It's easy to see why this magenta gem is a showstopperCosmos Seeds - Dazzler
It's easy to see why this magenta gem is a showstopperRegular price As Low As $4.49Regular priceUnit price per -
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Cosmos Seeds - Double Click - Double Violet
Eye-catching blooms and fern-like foliage make this variety a must growCosmos Seeds - Double Click - Double Violet
Eye-catching blooms and fern-like foliage make this variety a must growRegular price $6.59Regular priceUnit price per -
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Cosmos Seeds - Psyche Mix
Soft ruffled petals have extra personality because of double bloomsCosmos Seeds - Psyche Mix
Soft ruffled petals have extra personality because of double bloomsRegular price As Low As $4.49Regular priceUnit price per -
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Cosmos Seeds - Double Click - Mixed
This varied collection of double blooms has a color for everyoneOut of StockCosmos Seeds - Double Click - Mixed
This varied collection of double blooms has a color for everyoneRegular price $6.59Regular priceUnit price perOut of Stock
About our cosmos seeds
- 42 cosmos seed varieties and mixes
- Easy to grow and long-lasting
- Thrives in bright, sunny growing areas
- Bright and cheerful blooms
planting cosmos seeds in your garden
Cosmos bipinnatus, commonly known as garden cosmos, is considered a half-hardy annual, although plants may reappear via self-sowing for several years. Let the sunny disposition of cosmos, waving to and fro in the wind, brighten your day. Cosmos flowers will present themselves just 50 to 60 days after being sown. Once in bloom, cosmos height varies from two to six feet tall and can become top-heavy. Avoid this problem by planting in groups, or as a thick border along a fence line. The leaves will interlock, the colony will support itself, and you will reap the benefits of their show. If you can't decide on a favorite, try Eden Brothers' Crazy for Cosmos Seed Mix!
Cosmos is actually a Greek word meaning "harmony" or "balanced universe." It is a Mexico native flower and is one of the simplest flowers to grow. These beauties are suitable for all zones and are perfect for beginners and even children gardeners!
When to Plant Cosmos Seeds
Plant your cosmos seeds in the spring when the soil can easily be worked. Cosmos prefer full sun or partial shade. These blooms are incredibly adaptable and will thrive in average to poor soil quality as well as dry conditions.
Scatter cosmos seeds after the threat of frost has passed. Seeds may be covered about 1/4 inch with soil, as they do not need direct light to germinate. Water your seeds, keeping the soil moist but not soggy for about 10 days. Germination can occur in just a few days, or it may take up to two weeks.
caring for cosmos flowers
Once the seedlings begin to sprout, cosmos require little to no attention. Only water your cosmos during hot, dry spells. You can add a general purpose fertilizer once or twice a season to improve flowering if desired, however, these blooms are very self-sufficient for the most part. If you want your cosmos plants to continue blooming throughout the entire summer season, be sure to deadhead old blooms as they wilt. In warmer climates, cosmos may be cut back to 12 inches after blooming; they will start blooming again in one to two months. Divide flower clumps about every three years or so.
For more information about planting, growing, and caring for cosmos flower seed, see the Cosmos Seeds Planting Guide.