Cosmos bipinnatus 'Psyche White'

Cosmos bipinnatus 'Psyche White' has a showy semi-double flowers which are brilliant for arranging in vases large and small. More
50 seeds 030134 £1.95 In stock
Items will be despatched in 5-7 working days.
5 seedlings 510780-5 £5.95 Delivery mid April
When in stock, please allow up to 2 weeks for delivery.
10 seedlings 510780-10 £9.95 Delivery mid April
When in stock, please allow up to 2 weeks for delivery.
15 seedlings 510780-15 £14.95 Delivery mid April
When in stock, please allow up to 2 weeks for delivery.
5 jumbo seedlings 510780-SP05 £7.95 Delivery early May
When in stock, please allow up to 2 weeks for delivery.

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

More Details

Cosmos bipinnatus 'Psyche White' has a showy, semi-double flowers, which are brilliant for arranging in vases large and small.

Cosmos are stacked full of nectar and pollen, making them great for creating a wildlife friendly garden. They produce more bunches of flowers from a square metre than any other plant, so are brilliant for growing your own cut flowers.

Genus Cosmos
Group/Species bipinnatus
Variety Psyche White
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 1m (39in)
Spacing 40cm (16in)
Sowing, Seeds, Planting Sow under cover in mid spring and plant out after last frosts, or direct sow April-June.
Care Tips Pinch out tips at 15-20cm to encourage bushier plants. Needs staking.
Flowering June - November, 12-14 weeks from sowing
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
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Plant Delivery - When in stock, please allow up to 2 weeks for delivery.

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

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Cosmos bipinnatus 'Psyche White' reviews

* * * * - Average based on 3 reviews
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Reviewed 29th June 2018 by Janet Vitty

I was so looking forward to these flowers and ordered them specifically as I wanted WHITE flowers. So far out of the four plants that have flowered only ONE is white, the others are a pink, not a colour I wanted !


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Reviewed 13th August 2017 by Irene Spencer-Woods

These grew to about 5' tall and are still bearing masses of flowers. I did stake 4 of them but only with 3' canes. One had such a sturdy stem that it was fine without support. Absolutley buzzing with bees, wasps and hoverflies in the sun and they are able to access the pollen even though they are doubles. They make a stunning display.

Psyche white

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Reviewed 6th July 2017 by Victoria Venisse-Back

The Psyche white and Double click cranberry that I bought as plugs this year are both suffering from the flowers being too heavy for their stems.
Has anyone else had this problem? They were fine last year.

Reply from the Sarah Raven Team:

"Thank you for your feedback.

We are sorry to hear that you are not happy with your cosmos plugs, however are unaware of any other reports of this happening, did you pinch the plugs out as they were growing?
If you would like some horticultural advice, please do contact our Customer Service Team on 0345 092 0283 or at and they will be happy to help if you wish to discuss further.

With Kind Regards,
The Sarah Raven Team"

Posted 17th July 2017