Paradisea liliastrum (L.) Bertol.

RHS Plant Profile

St Bruno's lily

RHS 1971

Other common names

giant St Bruno's lily, great Savoy spiderwort, paradise lily, star lily of paradise

Synonyms

Anthericum liliastrum

Herbaceous Perennial

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A clump-forming herbaceous perennial to 60cm in height, with greyish-green grassy leaves and erect stems bearing racemes of lily-like pure white flowers 4-6cm in length in early summer

Position

Full sun, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

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

Chalk Clay Loam Sand

Moisture: Moist but well–drained
pH: Acid or Alkaline or Neutral

Position

Full sun Partial shade

Aspect: South–facing or East–facing or West–facing
Exposure: Exposed or 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): H5

Colour & Scent

Fragrance Flower

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Asparagaceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Clump forming
Genus: Paradisea are clump-forming, rhizomatous, herbaceous perennials with linear basal leaves and stems bearing loose racemes of trumpet-shaped white flowers in late spring or summer
Name Status: Correct
Plant Range: Pyrenees, Alps, Appennines

How to Grow

Cultivation

Grow in humus-rich soil in full sun or partial shade

Propagation

Propagate by seed sown in pots in a cold frame either when ripe or in spring. Propagate by division after flowering or in early spring

Suggested planting locations and garden types

Cottage and informal garden
City and courtyard gardens
Low Maintenance
Flower borders and beds

Pruning

Deadhead after flowering to maintain vigour and then cut back to base in winter

Pests

May be susceptible to slugs

Diseases

Generally disease-free