Growers and nurseries should be on the lookout for these diseases By Jared LeBoldus, Dave Shaw, and Paul Reeser Two new foliage diseases of Douglas fir and several other conifer species are emerging in Oregon, and they could be a threat to conifer growers and nurseries. The pathogens include Phytophthora pluvialis, the cause of Pytophthora […]
Farwest Show speakers talk about woody breeding and boxwood blight
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At the 2018 Farwest Show, seminar speakers Dr. Ryan Contreras of Oregon State University (OSU), and Jill Calabro of AmericanHort/Horticultural Research Institute (HRI), will deliver talks of particular interest to nursery growers, sharing insights on new breeding for woody plants and developments in the crisis of boxwood blight. Dr. Contreras’ seminar, “Moving, Shaking and Remaking: […]
Handier handbooks
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Updated pest management handbooks are now
mobile-friendly and searchable online.
Working smarter, not harder
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OSU Extension Service offers programs designed to increase knowledge among nursery workers, thereby increasing their productivity.
A tale of two lilacs: Part II — Pubescentes
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How series Pubescentes changed the horticultural landscape.
A tale of two lilacs: Part I — Syringa
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Among the six series of lilacs, two clades are as different as they are important to the horticulture industry — Syringa and Pubescentes.
Friday webinar will bring update on boxwood blight
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The American Nursery and Landscape Association (ANLA) will hold a webinar at 8 a.m. Pacific time, Friday, March 23, updating growers on the latest developments with boxwood blight (Cylindrocladium pseudonaviculatum). Growers who wish to participate must register in advance. The disease was first confirmed in the United States last fall, and causes defoliation and branch […]
Oregon takes proactive stance against boxwood blight
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So far there has been just one detection of boxwood blight in Oregon nurseries, but growers are taking the pathogen very seriously, as Mitch Lies reports in the Capital Press (Salem, Ore.). The Oregon Association of Nurseries has been out front in getting information to its members, and is holding a special meeting on Friday, […]
Box blight webinar set for Thursday at 8 a.m. PST
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Cylindrocladium buxicola, a fungal blight afflicting boxwood shrubs, recently has been detected in several East Coast states. Experts believe it came over from Europe on infected plant material. At 8 a.m. Pacific time on Thursday morning, Jan. 5, Kelly Ivors of North Carolina State University will hold a free webinar to address this disease threat. […]
Boxwood blight found in Eastern U.S. states
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Reports indicate that a new fungal blight of boxwood has been detected in the Eastern United States. Cylindrocladium buxicola was isolated recently and confirmed by USDA in North Carolina, Maryland and other locations. The disease can have severe effects on boxwood, causing rapid and severe defoliation. It was first detected in the U.K. and had […]