Kalmia – Ericaceae
Kalmia angustifolia ‘Rubra’ (eastern North America)
Habit: Domed dwarf shrub or occasionally a small shrub, 0.5-0.8 (1.0) m tall and wide; many shoots and stiffly upright, few twigs, some runners, occasionally like a thicket, very slow-growing.
Flowers: Small crimson-pink flower cups after shooting, in clusters on tips of twigs, June to July.
Leaves: Evergreen, lanceolate, up to 6 cm long, fresh green or pale blue-green, in clusters on twig ends.
Demands: Sun to semi-shady; avoids heat and drought; frost hardy.
Soil: For fresh to damp, acidic or neutral, very humic substrates.
Hardiness: Zone 5b