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chocolate cosmos | Plant Finder | Fill My Garden

Home/Plants/Perennials

Plants > Perennials

chocolate cosmos

Cosmos atrosanguineus

Fragrant

Genus: Cosmos
Family: Asteraceae
Common Names: black cosmos, black dahlia

About this plant

A spreading tuberous perennial, with pinnately divided leaves and bowl-shaped, chocolate-scented, maroon-crimson flower-heads in late summer

Growing Information

Height

0.5-1 Metres

Spread

0.1-0.5 Metres

Hardiness

Foliage

Deciduous

Growing Conditions

Sunlight

Full Sun

Soil

ClayLoamSandy

AcidAlkalineNeutral

Not Currently Available

This plant is not currently stocked at any garden centres on our platform.

Moisture

Poorly Drained

Aspect

West FacingEast FacingSouth Facing

Exposure

ShelteredExposed

Care Guide

Cultivation

Grow in a moderately fertile, moist but well-drained soil in full sun. Mulch in autumn; in cold areas lift tubers before first frosts and keep frost-free over winter.

Pruning

Deadhead to prolong flowering

Propagation

Propagate by taking basal cuttings in early spring and providing bottom heat

Pests

Generally pest free

Diseases

May suffer from foot rot and grey moulds

Garden Uses

Uses

Cottage InformalGround Cover

Planting Places

IndoorOutdoor

Season of Interest

SpringSummerAutumn

Size & Characteristics

Height

0.5-1 Metres

Spread

0.1-0.5 Metres

Time to Full Height

Five To Ten Years