Add year-round structure to your landscape with Kalmia latifolia 'Stoplight' (Mountain Laurel 'Stoplight'), a broadleaf evergreen shrub valued for glossy, leathery foliage and an eye-catching spring flower display. This selection is known for vivid red buds and clusters of cup-shaped blooms with purple markings that show well against dark green leaves.

Give your plant an acidic, humus-rich, moist but well-drained soil, and avoid heavy, wet clay. It performs best with partial shade (bright, filtered light), but it can handle more sun when you provide consistent moisture. A 2-3 inch layer of mulch helps keep roots cool and evenly moist; keep mulch pulled back from the stems.

At maturity it can reach 96-120 inches tall with a broad, multi-stemmed habit. Use it as a specimen, screening shrub, or woodland-edge planting. Flowers can attract pollinators, including butterflies and hummingbirds, and the plant is often less favored by deer and rabbits than many other shrubs (no plant is completely browse-proof).

Water regularly during establishment, then deep-water during dry stretches. Prune lightly right after flowering to shape, remove dead wood, and encourage healthy new growth. All parts of mountain laurel are toxic if ingested, so site it thoughtfully around pets and children.

Specifications

• Cold hardiness zone: 4-9 (-30 degrees F) - Contact your local extension to confirm hardiness if you are in a fringe zone (we cannot guarantee hardiness in fringe zones)
• Light: Full sun   Part sun
• Mature height: 96-120"
• Spread: 72-96"
• Tolerant of: Deer, Rabbits
• Attracts: Butterflies, Hummingbirds
• Evergreen: Yes
• Native to the U.S.: Yes

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