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Herbaceous Perennial

Tricyrtis flava

bright yellow toad lily

A clump-forming perennial to around 60cm tall with widely ovate, mid- to dark green foliage and upward-facing, star-shaped yellow flowers spotted brownish-purple borne in late summer and autumn

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Ultimate height

0.5–1 metres

Time to ultimate height

2–5 years

Ultimate spread

0.1–0.5 metres

Chalk

Loam

Sand

Moisture

Moist but well–drained

pH

Acid, Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full shade
Partial shade

Aspect

East–facing or North–facing or West–facing

Exposure

Sheltered

Hardiness
Hardiness ratings
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
H1a: under glass all year (>15C)
H1b: can be grown outside in the summer (10 - 15)
H1c: can be grown outside in the summer (5 - 10)
H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
H4: hardy through most of the UK (-10 to -5)
H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
H6: hardy in all of UK and northern Europe (-20 to -15)
H7: hardy in the severest European continental climates (< -20)

Botanical details

Family: Liliaceae
Native to the UK: No
Foliage: Deciduous
Habit: Bushy
Genus: Tricyrtis are rhizomatous perennials, sometimes stoloniferous, with erect or arching stems with alternate, sometimes 2-ranked leaves and star-shaped or bell-shaped flowers that may be solitary or in terminal or axillary clusters
Name status: Unresolved

How to grow

Cultivation

Grow in moisture-retentive but well-drained, leafy, humus-rich soil in partial shade in a sheltered, humid site; suitable for a woodland garden or shady border; if in moist enough soil in humid conditions may also tolerate sun

Propagation

Propagate by seed or by division in early spring

Suggested planting locations and garden types

Cottage and informal garden
Flower borders and beds
Underplanting of roses and shrubs

Pruning

Cut back old stems as plants die back for the winter

Pests

May be susceptible to slugs and snails

Diseases

Generally disease-free

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