About
Bushy evergreen shrub about 1m high, forming a thicket of upright stems bearing lance-shaped, glossy dark green leaves 6cm long. Produces clusters of distinctively crimped, small cup-shaped, white flowers, 1cm across, from mid to late spring.
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 hardinessH5
Plant details
Plant typeShrubs
HabitBushy, Suckering
FoliageEvergreen
Height0.5-1 metres
Spread1-1.5 metres
Time to full height5-10 years
Suggested usesCottage and informal garden
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. Tolerant of hard pruning
PropagationPropagate by semi-ripe cuttings in midsummer
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