Garden cosmos 'Purity' (Cosmos bipinnatus 'Purity')

Garden cosmos 'Purity'

Also known as: Annual cosmos 'Purity'

Garden cosmos 'Purity' offers stunning luscious silky-white petals honoring the name. It is an old cultivar of the Cosmos genus. This resilient flower grows in sun and partial shade. It makes a great show in garden beds, borders, and as a focal feature on its own. It is very attractive to bees, butterflies, and hummingbirds.

Scientific classification

Asters bellflowers fanflowers and allies

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Annual

Lifespan

Herb

Plant Type

Mid summer, Late summer, Fall, Early winter

Bloom Time

Green

Leaf Color

8 cm

Flower Size

White

Flower Color

Winter dormancy

Dormancy

Semi-evergreen

Leaf type

20 - 38 ℃

Ideal Temperature

Care Guide for Garden cosmos 'Purity'

Twice per week

Water

Full sun

Sunlight

20 - 38 ℃

Ideal Temperature

Water: Garden cosmos 'Purity' requires sufficient water during the seedling stage for robust growth. As it matures, its water needs decrease and can often be fulfilled by natural rainfall. Additional watering is only necessary during prolonged droughts, as excessive watering can lead to soggy soil and root rot.

Fertilize: Garden cosmos 'Purity' requires minimal fertilizer, as over-fertilization can lead to leggy growth and fewer blooms. Apply a balanced fertilizer (N-P-K = 20-20-20) during seedling watering for root development, and use phosphorus and potassium fertilizers to enhance blooming, stopping fertilization post-flowering.

Pruning: Garden cosmos 'Purity' features feathery foliage and vibrant blooms. Prune in early spring for bushier growth and more flowers. Remove spent blooms and cut back stems after the first flush to encourage new buds while avoiding heavy pruning to maintain vigor and reduce pest and disease risk.

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