About
Bushy evergreen shrub about 1.8m high with lance-shaped, glossy dark green leaves to 12cm long. Clusters of distinctively crimped, large, cup-shaped, blush white flowers up to 4cm across, ringed and blotched with small red-purple spots just inside the rim, opening from pink buds, from late spring to midsummer.
About the genus
Kalmia are evergreen shrubs with simple, leathery leaves and racemes or corymbs of bowl-shaped flowers in spring or summer
Growing conditions
SunlightFull sun, Partial shade
Soil typeClay, Loam
Soil pHAcid
Soil moistureMoist but well-drained
AspectEast-facing, North-facing, West-facing
ExposureExposed, Sheltered
UK hardinessH6
Plant details
Plant typeShrubs
HabitBushy
FoliageEvergreen
Height1.5-2.5 metres
Spread1.5-2.5 metres
Time to full height5-10 years
Suggested usesCottage and informal garden, Wildlife gardens
ToxicityHarmful if eaten. Wear gloves and other protective equipment when handling. Pets (dogs, cats, rabbits, tortoises): Harmful if eaten. For further information and contact numbers regarding pets, see the HTA guide to potentially harmful plants
Care notes
CultivationGrow in moist but well-drained acidic soil in partial shade, or in sun where the soil remains reliably moist; mulch in spring with leaf mould or well-rotted pine needles
PruningPruning group 8. Renovate, if necessary, over several seasons
PropagationPropagate by semi-ripe cuttings in midsummer or layering in late summer
Pest resistanceGenerally pest-free
Disease resistanceMay be susceptible to honey fungus in gardens where it is present but insufficient data to determine degree of susceptibility