0131 445 4698

Damhead Nursery
Damhead Farm
Lothianburn
Midlothian
EH10 7DZ

Details

 

Allium giganteum is a perennial with spreading, glossy, strap-shaped basal leaves which die down before the flowers. Dense globose umbels of bright purple flowers are borne on tall stems in summer

 

Hardiness

H5 - Hardy in most places throughout the UK even in severe winters (-15 to -10)

 

Aspect

South-facing, North-facing, West-facing or East-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 – 1.5 metres

Ultimate spread

 0.1- 0.5 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 from seed, sowing in containers in a cold frame when just ripe or in the spring. Alternatively, remove offsets in autumn

 

Suggested planting locations and garden types

Flower borders and beds Cut Flowers Cottage & Informal Garden Gravel Garden Rock Garden

 

How to care

Pruning

No pruning required

 

Pests

Generally pest free

 

Diseases

Generally trouble-free: Onion white rot and a downy mildew may occur

 

Allium Giganteum

Pot Size & Form