Mountain Laurel (Kalmia latifolia) Care Guide

Mountain laurel (Kalmia latifolia) is a broadleaf evergreen shrub native to eastern U.S. mountains. Related to rhododendrons and azaleas (family Ericaceae), it offers glossy green foliage and exquisite spring flower clusters in white, pink, red, maroon, cream, peach, or bicolors. State flower of Pennsylvania and Connecticut. Slow-growing to 4–10 m. All parts toxic if ingested (except pets appear unaffected).

Planting

• Source: Buy nursery-grown—wild transplants damage fragile roots.
• Site: Part shade ideal. Full sun dries roots; full shade reduces blooms.
• Soil: Acidic, moist, well-drained. Amend with humus, peat moss, sand.
• Depth: Crown (stem-root junction) at or slightly above soil level. Deep planting causes rot.

Care

• Water: Regular until established; then keep moist. Mulch with pine needles/wood chips (maintains acidity).
• Fertilizer: Minimal. Slow-release, acid-formula in early spring or late fall only.
• Pruning: Light. Remove spent flower heads after bloom to boost next year's flowers. Shape for height control.

Elegant, shade-tolerant, and long-lived—a aristocrat of the woodland garden.