Trillium sulcatum

RHS Plant Profile
furrowed wake-robin

Synonyms

Trillium erectum var. sulcatum

Herbaceous Perennial

A robust woodland perennial, to around 70cm high, with upright stems each bearing three broad green leaves with long pointed tips. Flowers with curved back petals are held on stiff stalks above the leaves in spring; flower colour varies from dark red or purple to white, cream or pale pink

Position

Full shade, Partial shade

Soil Types

Clay, Loam

Max Height

0.5-1 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
2–5 years
Max Spread
0.1-0.5 metres
Max Height
0.5-1 metres

Growing Conditions

Clay Loam
Moisture
Moist but well–drained
pH
Acid or Alkaline or Neutral

Position

Full shade Partial shade
Aspect
East–facing or North–facing or West–facing
Exposure
Sheltered
Hardiness
H4

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Melanthiaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Clump forming
Genus
Trillium are rhizomatous, herbaceous perennials with erect stems bearing a whorl of ovate or diamond-shaped leaves, with one or more erect or nodding flowers borne at the stem apex
Name Status
Correct
Plant Range
E North America

How to Grow

Cultivation

Thrives in moist but well drained, humus rich, neutral to slightly acidic soil in light shade, though will tolerate full shade. Mulch annually in autumn, ideally with leaf mould. Ideal for woodland, or underplanting where they will not be overwhelmed by other plants. See trillium cultivation

Propagation

Propagate by seed, sown in pots in a shady cold frame as soon as seed is ripe; may take several years to reach flowering size. Propagate by division of rhizomes (root cuttings) after flowering

Suggested planting locations and garden types

  • Cottage and informal garden
  • Low Maintenance
  • Flower borders and beds
  • Underplanting of roses and shrubs

Pruning

No pruning required

Pests

May be susceptible to aphids, slugs and snails

Diseases

Generally disease-free