Olsynium douglasii

RHS Plant Profile
grass widow
grass widow RHS

Other common names

purple rush lily, purple snowdrop, purple-eyed grass, spring bell, spring satin flower

Synonyms

Sisyrinchium grandiflorum
Sisyrinchium douglasii

Award of Garden Merit
Alpine Rockery Herbaceous Perennial

A clump-forming perennial producing slender, upright stems sheathed with grass-like leaves. The flowers are 2cm long, nodding, bell-shaped and a rich purple with a satiny texture. They appear in early spring

Position

Partial shade

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
Moist but well–drained
pH
Acid or Alkaline or Neutral

Position

Partial shade
Aspect
North–facing or East–facing
Exposure
Sheltered
Hardiness
H5

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Iridaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Columnar upright
Genus
Olsynium are fibrous-rooted, clump-forming perennials. They have mostly basal, stem-clasping, linear or lance-shaped leaves and nodding trumpet to bell-shaped flowers in spring
Name Status
Correct
Plant Range
W Canada W USA

How to Grow

Cultivation

Grow in moist, humus-rich, moderately fertile soil in semi-shade

Propagation

Propagate by seed sown in containers in a cold frame in autumn

Suggested planting locations and garden types

  • Gravel garden
  • Patio and container plants
  • Rock garden

Pruning

No pruning required

Pests

Generally problem free

Diseases

Generally problem free