Kalmia latifolia 'Sarah' (Mountain Laurel 'Sarah') is a broadleaf evergreen shrub valued for glossy, leathery foliage and showy late-spring flower clusters. Its buds are notably red, opening to rich pink to coral blooms that stand out against deep green leaves, giving you reliable color when many spring shrubs are finishing.
Give it the conditions it prefers and it will reward you for years. Plant in moist but well-drained, acidic soil rich in organic matter. A layer of pine bark or leaf mold mulch helps keep roots cool and evenly moist. Avoid heavy clay that stays wet, and do not allow the root zone to dry hard for long periods, especially during establishment.
Site it where you can provide bright light without harsh extremes. Full sun to part shade works well, with afternoon shade helpful in warmer areas. Mature size is typically in the 96-120 inch range, so leave room for the shrub to develop its natural rounded form and to allow good air movement around the foliage.
After flowering, you can lightly shape or remove spent blooms, but avoid hard pruning into old wood. Like many ericaceous plants, it appreciates consistent moisture, good drainage, and protection from drying winds. This plant is considered deer resistant, and the flowers are attractive to pollinators such as butterflies and hummingbirds.
All parts of Kalmia are poisonous if ingested, so place it thoughtfully around children and pets. Use it as a specimen shrub, in woodland edges, or mixed with acid-loving companions for a bold evergreen backbone and standout spring bloom.