8 jun. Desiccation, or drying out, is one important cause of winter damage to arborvitae. The arborvitae dry out when the needles lose water faster. Likely a combination of watering and a bad winter. It would be better to soak them with water and then not water again until the soil is dry inches down. Root rot and crown rot both cause foliage of Emerald Green arborvitae to turn brown. Caused by several different types of fungus, including Phytophthora and .
0コメント