Mountain laurel (Kalmia latifolia) is prized as an ornamental shrub not only for its exquisitely beautiful flowers but also for its attractive evergreen foliage, which adds color to the landscape year-around.

The foliage of mountain-laurel can be infected by at least 14 different species of fungi and suffers from an assortment of environmentally caused leaf disorders. This report describes two of the most common fungal leaf diseases and two environmentally caused leaf disorders.