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Pinpoint blue false cypress growth rate7/22/2023 If it feels wet, avoid watering.ĭiseases can take their toll on Leyland cypress trees. To monitor the soil moisture, use a shovel to open a 4-inch-deep gap in the soil near the base of the trees. “Excess water will increase root-rotting fungal diseases, and too little water leads to stress and ultimately stem and leaf diseases.” “The amount of soil water is one of the most critical factors in the growth of Leyland cypress,” Daly said. The tree is best suited for fertile, well-drained soils. Well-drained soil a must Disease pressure, improper planting and overuse may send Leyland cypress the way of plants like the red tip photinia and Bradford pears, according to Agriculture and Natural Resources Agent Tim Daly. Planting too close to a fence, building or each other will prevent the interiors of the trees from drying out, he said, and could lead to fungal diseases. “They also need plenty of air circulation inside the canopy to dry out the branches and leaves.” “Shade will reduce their vigor, causing them to thin out and become more susceptible to diseases,” Daly said. Leyland cypresses grow about 4 feet per year in height and 2 to 3 feet in width. It may be hard to imagine a small Leyland cypress growing into a 100-foot tall tree, but with proper care, it can and will happen, he said. “Think of the damage a tree that size could do to your house, fence or driveway only a few feet away.” “They grow into large trees, and in some parts of the world they can reach 100 feet tall and nearly 50 feet wide,” Daly said. Poor site selection can create problems with Leyland cypress trees. It was discovered on a British estate in the late 1800s, Daly said. Leyland cypress (X Cupressocyparis leylandii) is a hybrid species that resulted from a cross between the Nootka false cypress ( Chamaecyparis nootkantensis) and the Monterey cypress, ( Cupressocyparis macrocarpa). “They are popular because of their fast growth and their ability to provide a screen against traffic areas or neighbors.” “Leyland cypress trees are one of the most commonly planted trees in the landscape,” said Tim Daly, a University of Georgia Cooperative Extension agent in Gwinnett County. Popular as a hedge and in new development, the trees must be planted at least 10 to 15 feet apart, as the trees' rapid growth will require thinning out the trees after a few years to prevent them from growing into one another and reducing the air circulation needed in the canopy to prevent disease. Leyland cypress are one of the most commonly planted landscape trees, but poor site selection and disease pressure may soon send them the way of red tips and Bradford pears. Planting too close together or too close to structures can present major problems as the trees mature. May be affected by honey fungus and Phytophthora root diseases.Often planted to create borders or buffers, Leyland cypress trees can grow 4 feet taller in just a year.Perfect as a specimen plant, city gardens, cottage gardens, rock gardens, or for containers.Tolerant of chalk soils but prefers slightly acidic soil. Performs best in full sun to part shade in average, moist, well-drained soils.Winner of the prestigious Award of Garden Merit of the Royal Horticultural Society for its noteworthy qualities.(5-7 cm) per year, the small stature of this attractive Lawson Cypress makes it perfect for sunny borders, rock gardens, or containers where it adds year-round color and structure. Highly popular, Chamaecyparis lawsoniana 'Minima Glauca' (Lawson Cypress) is a dwarf, evergreen shrub of broadly globose habit, with lush, densely arranged, vertical sprays of soft blue-green foliage.
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