Narthecium ossifragum

RHS Plant Profile
bog asphodel

Other common names

Lancashire asphodel, llafn y bladur, maidenhair, yellow grass

Bogs Herbaceous Perennial

A perennial wildflower, spreading through rhizomes, and common in suitable habitats in the north and west of Britain, and in Ireland. The leaves form a flattened tuft, like a miniature iris, with a spike of rich yellow, star-shaped flowers in summer - a good source of pollen for bees. Red seed capsules follow, and the whole plant turns dark orange in autumn

Position

Full sun

Soil Types

Loam

Max Height

0.1-0.5 metres

Max Spread

0-0.1 metre

Size

Time to Maturity
2–5 years
Max Spread
0-0.1 metre
Max Height
0.1-0.5 metres

Growing Conditions

Loam
Moisture
Poorly–drained
pH
Acid

Position

Full sun
Aspect
South–facing or West–facing
Exposure
Exposed or Sheltered
Hardiness
H5

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Nartheciaceae
Native to GB/Ireland
Yes
Foliage
Deciduous
Habit
Tufted
Genus
Name Status
Correct
Plant Range
Europe

How to Grow

Cultivation

Naturally found in acid bogs, moorlands and other wet, peaty places. Needs humus-rich, permanently wet, nutrient-poor, acid soil in a sunny position

Propagation

Propagate by seed or by division

Pruning

No pruning required

Pests

Generally pest-free

Diseases

Generally disease-free