Details
 
Allium roseum is a perennial bulb, to 60cm tall, producing narrow, grass-like leaves and small, loose umbels of pale pink, cup-shaped flowers in summer, often including some bulbils
 
Hardiness
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
 
H6 - Hardy in all of UK and northern Europe (-20 to -15)
 
Aspect
South-facing or West-facing
 
Exposure
Sheltered 
 
Moisture
Well-drained, Moist but well-drained soil
 
Soil
Chalk, Clay, Sand, Loam
 
pH
Acid, Alkaline or Neutral
 
Size
Ultimate height
0.5 – 1 metres
Ultimate spread
0 - 0.1 metres
Time to Ultimate size
About 2 – 5 Years
 
How to grow
Cultivation
Easy to grow in fertile, well-drained soil. Add grit when grown in clay soils to improve drainage.
 
Propagation
Propagate by seed, or bulbils, or division of clumps in spring or autumn
Suggested planting locations and garden types
Flower borders and beds Ground Cover Cottage, Informal Garden & Container Plants
 
How to care
Pruning
No pruning required
 
Pests
Generally pest free
 
Diseases
Onion white rot and a downy mildew may occur