Cosmos bipinnatus 'Dazzler'

Large, open, buttercup-like flowers of carmine-pink with delicate, feathery foliage. More
100 seeds 030013 £1.95 In stock
Items will be despatched in 5-7 working days.
5 seedlings 510295-5 £5.95 Delivery early March
When in stock, please allow up to 2 weeks for delivery.
10 seedlings 510295-10 £9.95 Delivery early March
When in stock, please allow up to 2 weeks for delivery.

Or buy this as part of our Dark Cosmos Collection and Ultimate Cosmos Mix.

More Details

Cosmos 'Dazzler' has large, open, buttercup-like flowers of carmine with delicate, feathery foliage. Beautiful, tall and airy.

Cosmos last 10 days in the vase, produce at least two buckets of cut flowers a week from a 1 x 1m patch, and do so from late June until November. So that's nearly 50 buckets of flowers in one season from a small patch. They are impossible to beat.

Genus Cosmos
Group/Species bipinnatus
Variety Dazzler
Type Half-Hardy Annual
Common Name Cosmos
Border Position Middle
Soil Type Chalky, Neutral
Scent Unscented
Site Full Sun
Moisture Moist but Well-drained, Well-drained
Height 1.2m (3ft 11in)
Spacing 45cm (18in)
Sowing, Seeds, Planting Sow under cover in mid spring and plant out after last frosts, or direct sow early May.
Care Tips Pinch out tips at 15-20cm to encourage bushier plants. Needs staking.
Flowering July - October
Vase Life 7-10 days, no conditioning needed. Pick fresh straight into water, just as the buds are about to bloom, and do not pick in the heat of the day. Deadhead the main blooms that are drooping and going over after about a week. Place out of direct sunlight.
Harvesting Flower production: 4-5 months.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  • Sow Under Cover/Plant Indoors
  • Direct Sow/Plant Outdoors
  • Flowers/Harvest
Advice & Videos
Annual flowers for pots

If you want beautiful flowers for your pots this summer these are my top favourite annual flowers to grow.

How to get summer colours in an autumn garden

For an abundant autumn, plant smart and you’ll be enjoying beautiful flowers for months.

Annual flowers – create summer colour

Create summer colour with these unbeatable annual flowers.  Sarah's absolute favourites for reliability and colour.

How to plant and grow cosmos

Even if you only have a tiny garden – or just some pots – you have to grow at least one cosmos. They are the lowest maintenance,...

Direct sowing seeds

Learn how to get great results when direct sowing hardy annual seeds.


Plant Delivery - When in stock, please allow up to 2 weeks for delivery.

Seeds Delivery - Items will be despatched in 5-7 working days.

Click here to find out more information about our delivery rates and times.

Cosmos bipinnatus 'Dazzler' reviews

* * * * * Average based on 14 reviews

* * * * *

Reviewed 15th November 2018 by Marion

Very good quality plants I’ve been pleased with everything I’ve ordered from you , my Dahlias are still flowering!

* * * * *

Reviewed 14th November 2018 by Julie

* - - - -

Reviewed 14th November 2018 by Melissa

I killed them 😔 they arrived when I was away and when I went to pick them up they had died.....

* * * * *

Reviewed 7th November 2018 by Linda

* * * * *

Reviewed 7th November 2018 by Irene

Superb plants, grew well and gave a fantastic display.

* * * * *

Reviewed 19th September 2018 by Linda

Beautiful, still going strong !

* * * * *

Reviewed 19th September 2018 by Susie

Good service. Beautiful, healthy plants. Still going strong!

* * * * *

Reviewed 19th September 2018 by Arthur

All plants grew well and have flowered prolifically. Many hve grown to over 6 ft tall. with multiple flowers throughout the summer.

* * * * *

Reviewed 14th September 2018 by Hilary

Good height, wonderful non fading colour, and still flowering very well, even those in partial shade.

* * * * *

Reviewed 12th September 2018 by Rebecca

Great seedlings. Have grown into lovely healthy plants. Lots of flowers.

* - - - -

Reviewed 12th September 2018 by Claire

Unfortunately, I received my cosmos late. I had not received them by the date promised and after getting in touch was informed that the delivery had gone astray. So I was sent a new delivery. Consequently, I planted them in my south-facing garden later than I would have liked. I have had healthy foliage but still no flowers. I’m wondering whether they will flower before the frosts !

Reply from the Sarah Raven Team:

"Thank you for your feedback. we are sorry to hear that your replacement seedlings have failed to flower and can only presume that the hot weather we experience has delayed them. We have made a note on your account, please contact our Customer Services team in the spring if you wish to try another set."

Posted 7th November 2018

* * * * *

Reviewed 12th September 2018 by Penelope

* * * * *

Reviewed 29th August 2018 by Tania

True Dazzlers

* * * * *

Reviewed 7th July 2017 by Kaz Forecast

This is the first time I have grown Cosmos from seed - these are so easy to grow and stunning to look at. They will not go unnoticed by anyone and of course the beautiful feathery foliage is an added bonus. I am absolutely delighted with them. As I only have heavy clay meadow grass - all of my seeds and plants are grown in pots and they look amazing plus being able to move them around adds to the changing structure.