If your mountainlaurel has leaf spots or chlorotic foliage, you may be wondering, “Is my mountainlaurel sick.” Like all plants, mountainlaurels have their share of diseases. It is important to learn the signs of these diseases in order to treat them. Mountainlaurelbush.Some types ofmountainlaurels thrive in hot, humid climates, while others are only happy in cooler climates. How well your mountainlaurel does will depend on whether you choose the right variety for your area. In This Article. Mountainlaurel tolerates a wide range of light conditions, from full sun to full shade, but grows best in partial shade (morning sun with early to mid-afternoon shade) and in cool, moist, acidic, humus-rich, well-drained soils. Mulch to retain moisture and keep root zones cool. mountainlaurelbush in light pink.Mountainlaurel is susceptible to left spot, blight, wood borers, scale, white fly, and lace bugs. Leaf Spot: This common disease appears as large foliar spots in humid or crowded conditions. A Texas mountainlaurelbush pruned to a tree-shape, planted in an urban area surrounded by buildings and other small shrubs in bright sunshine. You can also create a tall screen with these, by planting several in a row and letting them bush out. Spots on MountainLaurel. According to the University of Illinois Extension, mountainlaurels are susceptible to no less than 14 types of leaf diseases caused by fungi, which thrive in moist, shady conditions. Another, more serious diseaseofmountainlaurels is botryosphaeria canker. It afflicts many other plants besides laurel and is, again, a fungal disease. Spores enter plants through pruning wounds or other damaged areas as well as through the natural openings in the plant tissue. How do you treat mountainlaurel leaf spots? Early Spring Apply fungicide soil treatment on plants with Phytophthora root trap for monitoring borers. Mid Spring Apply second fungicide spray to suppress leaf spot disease. Inspect for lacebug, weevils, caterpillar defoliators and borers. Leaf DiseasesofMountainLaurel.Dead or diseased leaves should be removed from the bushes and soil surfaces and destroyed by composting or burning. If only a light infection of leaf spot or leaf blight is detected, removal and destruction of diseased leaves is often sufficient.
