Landscape Contractor / Design Build Maintain

JUN 2018

LC/DBM provides landscape contractors with Educational, Imaginative and Practical information about their business, their employees, their machines and their projects.

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June 2018 13 Emerald Ash Borers Continue to Spread Citrus Under Dire Threat Coordinated Effort to Stop Three Potential Invaders Vermont has become the latest state to issue a quarantine due to the inva - sion of the emerald ash borer. Under the action, ash trees cannot be trans - ported between states or counties. There are now 32 states that have confirmed infestations. https:// tinyurl.com/ y9b5r93j Huanglongbing, a fatal disease of citrus trees spread by the Asian citrus psyllid has been found in California. There is no cure and the disease has already decimated Florida citrus, ac - cording to the USDA. Professionals and homeowners are being asked to report signs of the pest and disease to the California Department of Food and Agriculture hotline: 800-491-1899. https://www.CaliforniaCitrusThreat.org To help prevent damage from invasive pests, the coop- erative extension at Michigan State University created the "Eyes on the Forest" program with aims to "link research, outreach and communication activities" through the school. This effort specifically targets: the Asian Longhorned Beetle, Hemlock Wooly Adelgid and Thousand Cankers Disease. https://www.canr.msu.edu/eyes_on_the_forest/index Although the effects on growers and land - scapers of impatiens downy mildew have somewhat subsided, the disease remains a significant challenge so researchers continue to study its host range, fungicide efficacy, and resis - tance, and the Horticultural Research Institute continues to highlight the multipronged efforts to understand and combat it. https://www.hriresearch.org/ Health of Impatiens Still Hampered by Pest I n f o r m a t i o n R e q u e s t # 4 0 9 D e B ugged

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