Triteleia laxa 'Koningin Fabiola'

RHS Plant Profile

grassnut 'Koningin Fabiola'

Synonyms

Brodiaea laxa 'Queen Fabiola', Triteleia 'Queen Fabiola', Triteleia laxa 'Queen Fabiola', Triteleia laxa [Queen Fabiola]

Bulbs Herbaceous Perennial

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A half-hardy perennial with linear basal leaves to 40cm long. Loose clusters of funnel-shaped, violet blue flowers, with a darker stripe along the centre of each petal, are held on stems to 60cm high in early summer

Position

Full sun

Soil Types

Loam, Sand

Max Height

0.5-1 metres

Max Spread

0-0.1 metre

Size

Time to Maturity: 2–5 years
Max Spread: 0-0.1 metre
Max Height: 0.5-1 metres

Growing Conditions

Loam Sand

Moisture: Well–drained
pH: Acid or Alkaline or Neutral

Position

Full sun

Aspect: South–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): H3

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Asparagaceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Tufted
Genus: Triteleia are cormous perennials with linear basal leaves and umbels of funnel-shaped flowers opening as the leaves die down
Name Status: Accepted

How to Grow

Cultivation

In mild, frost-free areas, may be grown outdoors in light, fertile, sandy soil in full sun. In areas prone to frosts, may be grown in a cool greenhouse or in containers that can be moved indoors over winter, in a peat-free, loam-based compost with added sharp sand. Water freely while in growth; keep almost dry while dormant

Propagation

Propagate by seed or by division, separating corms while the plants are dormant. Plants grown from seed may take 3-5 years to mature

Suggested planting locations and garden types

City and courtyard gardens
Cottage and informal garden
Patio and container plants
Prairie planting
Flower borders and beds
Conservatory and greenhouse
Cut flowers

Pruning

No pruning required

Pests

Generally pest-free

Diseases

Generally disease-free