How to Grow Camassia
Camassia leichtlinii
Camassia produces elegant spires of star-shaped blue or white flowers in late spring, perfect for naturalising in damp meadows and borders. Plant bulbs in autumn, 10 cm deep in moisture-retentive soil in sun or light shade. They thrive in heavy clay where many bulbs fail. Leave foliage to die back naturally after flowering to feed the bulb for next year.
Yearly Lifecycle
Care Essentials
Apply a high-potash liquid feed after flowering while the foliage is still green. This helps build up the bulb for next year.
Watch For
- Slugs on emerging shoots
- Narcissus bulb fly (occasionally)
- Bulb rot in waterlogged winter soil
Track your Camassia care schedule — pruning, feeding, and seasonal tasks
Start planning freeCare Requirements
☀️ Light
Sun or light shade
Tolerates dappled shade well. Flowers best in sun but adapts to partially shaded positions under deciduous trees.
💧 Watering
Needs moisture-retentive soil
Thrives in damp conditions that would rot most bulbs. Ideal for naturally moist areas and pond margins.
🌱 Fertilizing
High-potash liquid feed after flowering
Apply a high-potash liquid feed after flowering while the foliage is still green to build up the bulb for next year.
✂️ Pruning
Remove spent spikes if desired
Never cut foliage until fully yellowed. Spent flower spikes can be removed for tidiness but seed heads also have ornamental value.
❄️ Overwintering
Hardy; bulbs persist in the ground
Fully hardy. Bulbs remain in the ground year-round and require no lifting or special winter protection.
Growing Tips
Leave foliage to die back naturally
The leaves feed the bulb for next year's display. Do not cut or tie them back until fully yellowed and limp.
Plant in damp areas where other bulbs fail
Camassia thrives in moisture-retentive soil that would rot most bulbs. Ideal for pond margins and low-lying beds.
Naturalise in meadow grass
Plant bulbs 10-15 cm deep in autumn and allow them to spread. They look their best in drifts through unmown grass.
Pests & Diseases
Pest Slugs
Identification: Irregular holes in leaves and flower stems; slime trails visible
- Use beer traps or copper rings around emerging shoots in spring
- Apply ferric phosphate slug pellets around plants
Pest Narcissus Bulb Fly
Identification: Soft, mushy bulbs containing a single large maggot; weak or absent growth
- Cover dying foliage with fleece to prevent egg-laying; firm soil around bulbs after flowering
- No effective chemical treatment; remove and destroy infested bulbs
Disease Bulb Rot Fusarium oxysporum
Symptoms: Yellowing foliage; soft, brown rotting tissue at bulb base
Treatment: Remove and destroy affected bulbs; do not replant in same spot
Prevention: Ensure good drainage; avoid damaging bulbs during planting
Disease Grey Mould Botrytis cinerea
Symptoms: Fuzzy grey mould on leaves and flower stems in damp conditions
Treatment: Remove affected parts promptly; improve air circulation
Prevention: Avoid overcrowding; remove dead foliage in autumn
Log Camassia in your garden — track growth, care, and harvests year after year
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