Chocolate cosmos
Common Name: Chocolate cosmos
Genus: Cosmos
Species: atrosanguineus
Skill Level: Experienced
Exposure: Full sun
Hardiness: Half Hardy
Soil type: Well-drained/light, Clay/heavy, Chalky/alkaline
Height: 75cm
Spread: 45cm
Time to divide plants: March to April
Flowering period:
June
to
September
Formerly called Bidens atrosanguinea and comparatively unknown, this tender Mexican perennial 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. As with most cosmos varieties, the blooms resemble small single dahlias, and its culture is similar too, as it has a tuber which, in mild gardens, can be planted at least 15cm (6in) deep and left in the ground with winter protection, or is more usually lifted in autumn for drying and storage.
Looks good with:
Crocosmia x crocosmiiflora 'Emily McKenzie'Dahlia 'Bishop of Llandaff'
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