Purple-leaf sand cherry (Prunus x cistena) brighten landscapes with its scented, pink-colored white spring flowers and reddish-purple, three-season foliage. The 7 – to 10-feet tall, sun-loving shrubs make attractive specimen or hedge planting. Under sand cherries disadvantages are a relatively short life. You start declining after ten years, according to the University of Illinois Extension website. Wilting a younger sand cherry bush is symptomatic of another problem – verticillium wilt fungus infection.
Alboatrum two soil-borne fungi, Verticillium and Verticillium dahliae, are responsible for Verticillium wilt disease. The V. dahliae strain is most likely to attack sand cherry shrubs in the United States. Can live the filamentous, mycelial form of the fungus more than 10 years in dry soil.
Verticilllium fungus overwinters in the soil round sand cherries. He enters the room or shrubs by their investors due to injuries of the main root system. It spreads by spores or mycelium moves through the plant xylem, or water-transporting vessels. The sand cherry tissue dies, where the fungus clogs the xylem and prevents the water from flowing. Heavy infestation of the shrub will quickly kill.
Sand cherries infested Verticillium fungus most likely to show symptoms of the mid to late summer. Leaf wilt of blocked water vessels and olive green to black stripes in the bush of the forest, where tissues have died classic symptoms of Verticillium infection. Entire industries have died on severely infected plants. Other signs of acute want to include dried, curled red or yellow leaves and defoliation. The disease can only work on the shrub. Plants that have less severe but chronic, small infestations, yellowing or scorched leaves, retarded growth, and sudden leaf wilt on one or more branches.
No fungicides can control an existing sand cherry Verticillium wilt infested. A mildly affected shrub, however, relatively symptom-free for some time. Remove diseased branches with disinfected cutting tools, the fungus’ spread can slowly through the system. Infected plants fertilize the best performance in soils with high potassium and low. Additional irrigation may also infection. Verticillium fungus mycelium not survive in warm, moist soil.
Protect your sand cherry from verticillium wilt by planting in soil fungus-free. Keep it strong with adequate fertilizer and water when it is actively growing. Can hurt tillage around the bush weaken their roots, and inviting other fungal infections. Avoid cultivating the soil around its roots. Damaged roots invite infection of other fungal diseases. You will lower your sand cherry Verticillium resistance.