Details
'Caradonna' is a perennial cultivar with upright racemes of violet- purple flowers through the summer above narrow, rough, grey-green leaves
 
 
Hardiness
H7 - Hardy in the severest European continental climates (< -20)
 
 
Aspect
South-facing or West-facing or East-facing

Exposure
Exposed or Sheltered

Moisture
Moist but well-drained

Soil
Sand, Loam, Chalk

pH
Acid, Alkaline, Neutral

Size
Ultimate height
0.1-0.5 metres
Ultimate spread
0.1-0.5 metres
Time to ultimate height
2-5 years

How to grow
Cultivation
Grow in light, moderately fertile, humus-rich, moist but well-drained soil. Mulch in spring. Best in full sun but can tolerate light partial shade. Drought-tolerant once established
Propagation
Propagate by division in spring and by semi-ripe cuttings in summer
Suggested planting locations and garden types
Flower borders and beds Underplanting of Roses and Shrubs Mediterranean Climate Plants Wildlife Gardens

How to care
Pruning
Deadhead flower spikes as they fade to prolong flowering
Pests
Generally trouble-free but may suffer from slugs, snails and leafhoppers
Diseases
Generally disease free