Details
'Lord Roberts' is a large, upright evergreen shrub with rounded trusses of deep crimson, funnel-shaped flowers, marked with black in the throat, opening late spring to early summer

Hardiness
H6 - Hardy in all of UK and northern Europe (-20 to -15)
 
 
 
Aspect
 
South-facing or North-facing or West-facing or East-facing
 
 
 
Exposure
 
Sheltered
 
 
 
Moisture
 
Moist but well-drained
 
 
 
Soil
 
Sand, Clay, Loam
 
 
 
pH
 
Acid
 
 
 
Size
 
  
 
Ultimate height 1.5-2.5 metres
 
  
 
Ultimate spread 1.5-2.5 metres
 
  
 
Time to ultimate height 10-20 years
 
 
 
 
 
How to grow
 
Cultivation
 
Grow in moist but well-drained, leafy, humus-rich acid soil in part shade with shelter; see rhododendron cultivation
 
Propagation
 
Propagate by semi-ripe cuttings in late summer, layering in autumn or grafting in late summer or late winter
 
Suggested planting locations and garden types
 
Hedging & Screens Low Maintenance City & Courtyard Gardens Cottage & Informal Garden
 
 
 
How to care
 
Pruning
 
Pruning group 8
 
Pests
 
May be attacked by vine weevil, rhododendron leafhopper, pieris lacebug, scale insects, caterpillars and aphids
 
Diseases
 
May be affected by various Rhododendron diseases including powdery mildews, rhododendron petal blight, rhododendron bud blast, silver leaf and honey fungus
 
 
 
Info. courtesy of the RHS