Details
 
P. beesiana is a deciduous perennial forming a flat rosette of light green, crinkly leaves to 20cm long, with erect, mealy stems bearing several whorls of yellow-eyed, purple flowers in late spring and early summer
 
 
 
Hardiness
 
H6
 
 
 
Sunlight
 
Full Sun, Partial Shade
 
 
 
Aspect
 
South-facing, North-facing, West-facing or East-facing
 
 
 
Exposure
 
Exposed or Sheltered
 
 
 
Moisture
 
Moist but well-drained
 
 
 
Soil
 
Chalk, Clay, Sand, Loam
 
 
 
pH
 
Acid, Alkaline, Neutral
 
 
 
Size
 
Ultimate height: 0.1-0.5 metres
 
Ultimate spread: 0-0.1 metre
 
Time to ultimate height: 2-5 years
 
 
 
How to grow
 
Cultivation
 
Grow in partial shade, in deep, humus-rich, moist, neutral to acid loam soil, or peaty soil. Tolerates full sun if soil remains moist at all times
 
 
 
Propagation
 
Propagate by seed sown in containers in an open frame, as soon as ripe or in late winter or early spring. Divide between autumn and early spring. Root basal cutting or offsets in autumn or early spring. Take root cuttings when dormant in winter
 
 
 
Suggested planting locations and garden types
 
Flower borders and beds Cottage & Informal Garden
 
 
 
How to care
 
Pruning
 
No pruning required
 
 
 
Pests
 
May be attacked by aphids, vine weevil, slugs, leaf and bud eelworms and glasshouse red spider mite
 
 
 
Diseases
 
May be subject to a leaf spot and grey mould
 
 
 
Source: www.rhs.org.uk