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6th January 2021. In line with the current government lockdown rules, Burncoose Nurseries is closed to visitors. However at present we are able to offer click and collect to local customers. This will be weekdays only, not weekends. Mail order is continuing as normal. However please allow extra time for the couriers to deliver, once despatched from us. Sorry to say that some depots are experiencing high volumes of traffic, also staff shortages.

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'C' > COSMOS > atrosanguineus > 'Black Bidens' >

COSMOS atrosanguineus 'Black Bidens'

Commonly known as Black cosmos, Chocolate plant

Chocolate scented crimson-black single flowers borne on stiff stems

Further Reading....

Available late spring to early summer 2021 - These plants will be available again sometime in late spring/early summer depending on growing conditions.

individually £11.50 each, 3+ £9.00 each

Available late spring to early summer 2021

1.5 to 2 Litre - Early in the year, typically January til end of March, herbaceous plants might be supplied in 9cm pots to ensure timely despatch

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Mature Size
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Brown or black - crimson black
Height - 75cm (30in)
Spread - 45cm (18in)
Herbaceous - Early in the year, typically January till end of March, herbaceous plants might be supplied in 9cm pots to ensure timely despatch. - tuberous perennial. Flowers have a velvet texture.
Hardy - average winter - Hardy through most of the UK apart from inland valleys, at altitude and central/northerly locations. May suffer foliage damage and stem dieback in harsh winters in cold gardens. Plant can withstand temperatures down to -10°C (14°F)
Full sun
Additional Features - Good to know - - makes a good container plant. Vanillin is the chocolatey scent.
Pests & Diseases - aphids, slugs, grey mould.
Place of origin - Mexico. Thought to be extinct in the wild. Survives as a single clone propagated vegetatively.
Flower Shape - Cup-shaped - - shallowly cup-shaped 4.5cm (1¾in) across
Single - Row of petals round conspicuous stamens - no more than 8 petals
Garden Location/Conditions - Patio / pot plants -
Hardiness - Frost hardy (down to -5) -
Scented Plants - Scented flowers -
Seasonal Interest - Autumn -
Soil Conditions - Fertile moist well-drained soil -
Wildlife - Butterfly friendly -