How do weather and climate impact boxwood blight? A modeling approach to aiding in boxwood disease management

HRI Research • September 15, 2022

Presented by Len Coop - Associate Professor @Oregon Integrated Pest Management Center, Oregon State University, Corvallis, Oregon (USA)


Boxwood blight is a fungal disease that can decimate boxwood plantings in most all settings and environments. The degree of injury can vary widely, depending on cultivar susceptibility, local disease severity, and weather, from nearly symptom-free to total destruction and death of boxwood plants. Dr. Len Coop will present how weather and climate affect both where the disease is of most concern, and when conditions may be most favorable for disease build-up. A demonstration of online tools will be given so that boxwood managers can apply these principles towards reducing and controlling this disease. Now boxwood blight model predictions can be delivered according to a subscriber's settings in their email in-box, making management decisions easier and less time consuming.

Share This Post

By Jennifer Gray July 23, 2025
COLUMBUS, OH – July 22, 2025 – The Horticultural Research Institute (HRI) and AmericanHort are proud to announce the HRI Leadership Academy Class of 2026, a cohort of accomplished professionals from across the green industry who are poised to take their leadership to the next level. These individuals, representing various industry segments and career paths, were selected for their commitment to horticulture and their desire to help shape the industry's future. The HRI Leadership Academy is a one-year advanced leadership program designed for experienced horticulture professionals looking to elevate their influence and expand their strategic thinking and business skills. Built around in-person classes, peer collaboration, and mentorship, this program prepares leaders to confidently navigate business challenges, drive innovation, and spark positive change in their businesses, the industry, and their communities. 
By Jennifer Gray March 14, 2025
It is neither economically sustainable nor environmentally acceptable to make multiple fungicide applications to protect boxwood, a key nursery crop and iconic landscape plant, from boxwood blight.
A close up of a green background with a blurred effect
By Jennifer Gray March 10, 2025
Columbus, OH - The Horticultural Research Institute (HRI), the research affiliate of AmericanHort, is excited to announce that it is now accepting research grant proposals for fiscal year 2026. HRI’s competitive grants program supports projects that directly impact and advance the green industry, providing funding for research on significant topics such as plant health, pest management, understanding consumer behavior, production efficiencies, and quantifying plant benefits.
Show More