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Camassia leichtlinii 'Semiplena' (d)

camas 'Semiplena'

An upright clump-forming, bulbous perennial with strap-like, dark-green leaves and erect stems bearing dense racemes of star-shaped, creamy-white flowers in May/June.

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Ultimate height

1–1.5 metres

Time to ultimate height

1–2 years

Ultimate spread

0.1–0.5 metres

Chalk

Loam

Sand

Moisture

Moist but well–drained, Well–drained

pH

Acid, Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun
Partial shade

Aspect

North–facing or 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)

Botanical details

Family: Asparagaceae
Native to GB / Ireland: No
Foliage: Deciduous
Habit: Clump forming, Columnar upright
Potentially harmful: Ornamental bulbs - not to be eaten. Wear gloves and other protective equipment when handling. Pets: Ornamental bulbs - not to be eaten - see the HTA guide to potentially harmful plants for further information and useful contact numbers
Genus: Camassia are bulbous perennials with narrow, channelled leaves and erect racemes of star-shaped violet-blue or creamy-white flowers in early summer
Name status: Accepted

How to grow

Cultivation

Plant 10 to 15cm deep in autumn in fertile, humus-rich, moist but well-drained soil in sun or partial shade. Does not tolerate waterlogged conditions. Mulch in winter in cold areas. May have the potential to become a nuisance due to prolific self-seeding if not managed well

Propagation

Propagate by offsets

Suggested planting locations and garden types

Wildflower meadow
Coastal
Cottage and informal garden
Prairie planting
Banks and slopes
Flower borders and beds

Pruning

Deadhead faded flowers spikes

Pests

Generally pest-free

Diseases

Generally disease-free

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