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Camassia leichtlinii (Baker) S. Watson

Californian white quamash

Has rather lax foliage which dies back quickly, and strong, erect flower stems to 130cm tall, bearing long spikes of many flowers in various shades from white to blue in late spring and early summer

Synonyms
Camassia leichtlinii subsp. typica
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Size
Ultimate height
1–1.5 metres
Time to ultimate height
2–5 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Chalk
Loam
Sand
Moisture
Moist but well–drained, Well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Blue Cream White Green
Summer Green
Autumn
Winter
Position
  • Full sun
  • Partial shade
Aspect

West–facing or South–facing or East–facing

Exposure
Exposed or Sheltered
Hardiness
H4
Botanical details
Family
Asparagaceae
Native to the UK
No
Foliage
Deciduous
Habit
Clump forming, Columnar upright
Potentially harmful
Ornamental bulbs - not to be eaten. Wear gloves and other protective equipment when handling
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

Correct

Plant range
W North America

How to grow

Cultivation

Grow in moist but well-drained fertile, humus-rich soil in sun or part shade, providing a winter mulch. Do not allow soil to become waterlogged. Plant bulbs 10cm deep in autumn. May have the potential to become a nuisance due to prolific self-seeding if not managed well

Propagation

Propagate by seed in containers in a cold frame as soon as ripe or remove offsets when dormant in summer - see bulb propagation

Suggested planting locations and garden types
  • Wildflower meadow
  • Coastal
  • Cottage and informal garden
  • Prairie planting
  • Banks and slopes
  • Flower borders and beds
Pruning

Cut back old or damaged growth as it deteriorates

Pests

Generally pest-free

Diseases

Generally disease-free

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