Fluted pink petals of Cosmos 'Sea Shells'

10 colourful cosmos to grow

We pick 10 of the best cosmos to grow for colour and cut flowers.

Cosmos are easy-to-grow, versatile annuals that produce daisy-like flowers through summer and into autumn, often up until the first frosts.

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They can be used to plug gaps in borders, grown as a feature in their own right, or used in container displays. Cosmos flowers attract a variety of bees, butterflies and hoverflies, and also look great in a vase.

For ideas and inspiration, check out eight cosmos planting combinations.

For best results grow in full sun in well-drained soil, and deadhead spent blooms regularly to prolong flowering.

Discover 10 great cosmos varieties to grow, below.

Cosmos flowers attract a variety of bees, butterflies and hoverflies, and also look great in a vase.

1

Cosmos bipinnatus ‘Dazzler’

Cosmos bipinnatus ‘Dazzler’ bears carmine-red blooms that really do dazzle in the garden, from early summer to mid autumn.

Cosmos: vivid pink-red bloom of 'Dazzler'
Cosmos: vivid pink-red bloom of ‘Dazzler’
2

Cosmos atrosanguineus

Formerly called Bidens atrosanguinea, chocolate cosmos is now a fashionable late summer highlight in warm borders, as much for its scent of vanilla and hot chocolate as for the dusky brownish-red blooms.

Brown-red blooms of chocolate cosmos
Brown-red blooms of chocolate cosmos
3

Cosmos bipinnatus ‘Gazebo Red’

Cosmos ‘Gazebo Red’ is a medium-sized and bushy, early-flowering variety of cosmos, with lovely large, velvety red blooms.

Cosmos: large red blooms of 'Gazebo Red'
Cosmos: large red blooms of ‘Gazebo Red’
4

Cosmos bipinnatus ‘Fizzy Pink’

Cosmos bipinnatus ‘Fizzy Pink’ is a superb, tall, eye-catching annual, with flowers in strong colours ranging from white to carmine.

Cosmos: pink blooms of 'Fizzy Pink'
Cosmos: pink blooms of ‘Fizzy Pink’
5

Cosmos bipinnatus ‘Picotee’

Cosmos ‘Picotee’ has pretty, eye-catching blooms The soft pinkish-white petals are fringed with an irregular deep crimson.

Cosmos: magenta-fringed white petals of 'Picotee'
Cosmos: magenta-fringed white petals of ‘Picotee’
6

Cosmos bipinnatus ‘Purity’

Cosmos ‘Purity’ is a pure white form that flourishes in a spot in full sun. It’s a beautiful garden plant but also makes an excellent cut flower.

Cosmos: white blooms of 'Purity'
Cosmos: white blooms of ‘Purity’
7

Cosmos bipinnatus ‘Rubenza’

Cosmos ‘Rubenza’ has two-tone flowers which emerge a deep velvety red and mature to a rich rose. As it’s more compact than other varieties, it works well in a container.

Cosmos: velvety red flowers of 'Rubenza'
Cosmos: velvety red flowers of ‘Rubenza’
8

Cosmos ‘Sonata White’

Cosmos ‘Sonata White’ bears large white flowers on compact plants, making it another variety that’s ideal for growing in pots.

Cosmos: large white bloom of 'Sonata White'
Cosmos: large white bloom of ‘Sonata White’
9

Cosmos bipinnatus ‘Sea Shells’

Cosmos ‘Sea Shells’ has unusual, fluted petals like a sea shell. Bright pink petals fan out from a yellow, button-like centre.

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Cosmos: fluted pink petals of 'Sea Shells'
Cosmos: fluted pink petals of ‘Sea Shells’
10

Cosmos bipannatus ‘Sensation Mixed’

Cosmos bipinnatus ‘Sensation Mixed’ bears large, daisy-like flowers in shades of pink and white, throughout the summer and right up until the first frosts.

Cosmos: deep-pink bloom of 'Sensation Mixed'
Cosmos: deep-pink bloom of ‘Sensation Mixed’

Collecting cosmos seeds

Have a go at collecting seeds from your cosmos. Although you’re not guaranteed exactly the same flowers next year, it’s exciting to see what will spring up and it’ll save you money on seeds. 

Secateurs