The plant can survive with little to no water while also being resistant to most pests and diseases. Wildlife. Also called botrytis blight, gray mold leads to discolored and wilted foliage that decays and falls from the evergreen. Wildlife is a common problem that affects most tree species, including the arborvitae. Also known as white cedar, Emerald green arborvitae derives its name from the dark green color. If you don't have a disease or insect … This problem has been widely observed on arborvitae from all regions in Oregon, as well as from Washington, Idaho, and numerous other states across the country. Informational table showing disease name, symptoms, pathogen/cause, and management of Arborvitae diseases. Green emerald arborvitae has few problems, but can still come under attack from various diseases. Emerald Green Thujas are hardy and adaptable to lots of soil conditions and will stay green and attractive with no browning or bare-spots from winter – unlike other inferior hedge plants. Avoid planting them in windy areas and overexposure to too much cold. Updated: July 31, 2016. Emerald Green Arborvitae Growth Rate in my Yard (Pennsylvania, Zone 6B) Planting your Emerald Green privacy trees Stake out the distance. To flourish, these trees need at least six hours of direct sunlight per day. Save For Later Print. Emerald Green Arborvitae are a common hedge tree that is easy to care for and not prone to pests or disease. The smallest of the plants is showing signs of browning. Fungicides are effective against blight, but must be applied in the time and amount package instructions indicate. Q: At the beginning of May, I had ten Emerald Green arborvitae planted by a local landscaper. It has no know disease or pest problems. Dark-colored spots develop and a reddish black sap will ooze out of the discolorations. Branchlet. However, you can prevent this by proper air circulation. When planted as a specimen tree, they can be a center piece of any landscape. These trees have no serious pest or disease issues, don’t require fertilizer or pruning to thrive, and are moderately drought tolerant. The Emerald is your best choice for a medium-sized privacy screen. When they are small it is easy to overlook the fact that they will get four feet wide. This prevents the foliage of the plant from becoming wet and reduces the chance of fungal growth. Keithia blight is very serious and causes black shotholes in the foliage which will eventually turn brown and fall off. See more ideas about backyard landscaping, front yard landscaping, landscape design. Emerald Green is also one of the few Arborvitae trees that does not have any bronzing of the foliage in winter. Also known as Thuja occidentalis 'Smaragd', it is pest and disease resistant and drought tolerant once established. Proper care and cultural methods will prevent and control canker disease. The Emerald Green Arborvitae is the go-to. Keep the ground near and around the evergreen free from debris such as fallen plant matter. It is also known as Thuja occidentalis 'Smaragd'. It is normally very disease resistant with the proper Green Giant Arborvitae care and preventative measures. The average life span of the emerald green arborvitae is about 25 years. Fertilizing your Arborvitae trees. The leaves are scale-like, with a darker green on top and the bottoms are a lighter green. Normal browning. This product controls all life stages of unwanted insects. This disease causes discolored, wilted and stunted foliage and stains, streaks and cankers on the bark. Arborvitae is routinely planted by green industry professionals and homeowners as a landscape ornamental. per year (30 cm), it maintains its lovely color year-round and does not turn bronze in winter. This arborvitae grows about four feet a year and can get up to fourteen feet with a four foot spread. Asked August 26, 2017, 3:25 PM EDT. Remove and dispose of damaged, dying and infected foliage and stems to prevent the disease from spreading. A fungicide high in copper is the best to use. Arborvitae fungal diseases. Item was added to the cart successfully! These pests are similar to those that affect the green giant arborvitae. They are fairly hardy and disease-resistant plants. Only plant evergreens adapted for your location and keep it healthy and vigorous with proper care. Additionally, take care not to plant the trees too close together. 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