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Cosmos bipinnatus

‘Double Dutch Rose’


$5.00 AUD

Availability: In stock

Cosmos bipinnatus ‘Double Dutch Rose’

Cosmos bipinnatus ‘Double Dutch Rose’ has flounced flowers, with layer upon layer of soft rose-pink petals – like a ballerina’s tutu.

Layered petals like old-fashioned starched petticoats 

‘Double Dutch Rose’ is long & constant blooming all through summer & autumn, with large and abundant flowers of soft rose-pink.
So it is rated as a superb, commercial quality cut flower.
As well as giving a splendid garden display for months on end.
While the pretty ferny foliage also adds to the lacy, gentle effect.

Hardy & easy to grow

Blooms are self self supporting with strong, long stems. So making them perfect for cut flowers.
Cosmos bipinnatus ‘Double Dutch Rose’  is a stunner planted amongst pink, white or red roses, and a wonderful addition to any flower or cutting garden.

Quick from seed to bloom

Plant Cosmos bipinnatus ‘Double Dutch Rose’ in Full Sun, though it can also tolerate a little Part Shade, particularly in hot areas.
It is a water-wise, heat & dry hardy grower, and quick and easy to raise from seed.
So it will happily begin to bloom 2-3 months after sowing the seed.
Plus ‘Double Dutch Rose’ is a tough, easy, low maintenance annual which self-seeds reliably in the garden every year, once you get it started.

Compact and slender 80-100cm High x 45cm Wide approx.

Tip for harvesting best cut flowers

Cut the blooms when the buds are just beginning to unfurl.
So you have cut them before the bees have their fun.
This helps to extend the vase life of the flowers.

Sowing tip for commercial flower farmers

Cosmos bloom most heavily when the daylight hours are 14 hours per day or less, unless they are mature before the very long days are upon them.
So for the heaviest and longest blooming crops – get your Cosmos seeds growing early indoors, and have them planted out, well grown and established before mid-summer.
Then sow a later crop to mature by mid-summer, because these will crop very heavily during autumn as the day lengths shorten.

Cut & come again

Cosmos really are “cut & come again” plants.
So the more you cut blooms, the more they will produce.
Deadheading any spent blooms will also keep them in vigorous flower production.


Suitable for beginner and gardening with kids.

Sow any time of year indoors / or scatter directly in the garden in spring & early summer.

Sow indoors for quick & early plants: First sow the seeds in a punnet on the surface of good quality seed raising mix.
Now cover the seeds to a depth of approx. 6mm.

Then stand the sown punnet in a shallow water bath and allow the moisture to percolate up to the surface of the mix from below.

And place in a warm, well-lit position (not in any direct sunlight).
You can use a temperature controlled heat mat if you have one.
But it is not essential as these seeds are willing germinators.

Temperatures of 20-25°C are best for rapid and optimum germination.

Then continue to keep the sown punnet moist by misting from a spray water-bottle.
Covering the punnet with a clear plastic cover or plastic bag will also help to maintain the necessary consistent, even moisture.

Seedlings emerge in approx. 14-21 days.

Seed Count: 50 seeds per pack approx.
(We always aim to exceed the stated seed count, and give a generous serve).

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