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Dierama 'Cosmos' | Plant Finder | Fill My Garden

Home/Plants/Bulbs

Plants > Bulbs

Dierama 'Cosmos'

Dierama 'Cosmos'

Genus: Dierama
Family: Iridaceae

About this plant

A slow-growing evergreen perennial, to 1.2m high in flower, with fine clumps of narrow, grass-like leaves. From mid to late summer, produces slender, arching stems bearing a succession of pendent, bell-shaped dark purple flowers with contrasting silvery bracts

Growing Information

Height

1-1.5 Metres

Spread

0.1-0.5 Metres

Hardiness

Foliage

Semi Evergreen

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 DrainedWell Drained

Aspect

West Facing

Exposure

Exposed

Care Guide

Cultivation

Grow in humus-rich, well drained soil in an open, sunny spot; these plants like moisture during the growing season but dislike winter wet. Add a compost mulch in spring. May benefit from winter protection in colder areas. See dierama cultivation for more detailed advice

Pruning

Tidy any winter-damaged foliage by cutting to the base in spring

Propagation

Propagate by division of mature clumps, carefully separating corms in spring. Young plants and divisions can be slow to establish

Pests

Generally pest-free

Diseases

Generally disease-free

Garden Uses

Uses

Cottage InformalFlower BordersGround CoverRock GardenHedging Screens

Planting Places

Outdoor

Season of Interest

SpringSummerAutumnWinter

Size & Characteristics

Height

1-1.5 Metres

Spread

0.1-0.5 Metres

Habit

FloatingClump Forming

Time to Full Height

Five To Ten Years