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Cosmos bipinnatus 'Sonata Series'


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Key information

Plant type

Hardy annual

Flower colour





Half hardy

Skill level


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Plant details

These are plants for the border, where they can be arranged in groups for height and colour among other tall plants. They are also ideal for cutting, lasting well in water and appreciated for their long stems, as well as the range of colours of their single dahlia-like blooms, 8cm (3in) or more across. They are undemanding plants, originally from Mexico and flourishing in warm sun and poor soils. The 'Sonata Series' is an award- winning strain, producing compact plants with large red, rose, pink and white flowers, available as a mixture or in single colours. The Royal Horticultural Society has given it their prestigious Award of Garden Merit (AGM).

Family: Asteraceae

Genus: Cosmos

Species: bipinnatus

Cultivar: Sonata Series

Plant type: Hardy annual

Flower colour: Mixed

Foliage colour: Mid-green

Feature: Flowers

Sun exposure: Full sun

Soil: Well-drained/light, Moist

Hardiness: Half hardy

Skill level: Beginner

Height: 60cm

Spread: 38cm

Time to plant seeds: March to May

Flowering period: July to September

Reader reviews

Leo wake2

i grow these in my garden last sumer the grow to about 6ft as i was feeding them with tomato food excellentt flowere

Flower bird

I love cosmos. I only starting growing them last year and found them very easy to grow from seed,
There is something beautiful and wildflowerish about them. I think they are a glorious flower.



I was advised that these plant will still grow indoors during thee winter as a new b can anyone tell me more if this would be correct stunning plant,

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