Blog2020-09-15T20:14:23+00:00

The official blog of the Oregon State University Plant Clinic

Brown rot – an aptly named and unwelcome disease of stone fruits

I have a sour cherry tree in my yard that declines a bit more each year. It is in sad shape, with seared-open main branches injured by sun scald and invaded by decay fungi. This all stemmed from leaf loss due to an ongoing and pervasive case of brown rot caused by the fungus Monilinia. This organism infects first through the flowers, usually after a rain while the flowers are open.

By |April 21st, 2020|Categories: Plant disease|

Tea Scale: An unwanted hitch-hiker

Sunny days and warmer weather bring about thoughts of gardening: which plants are not performing as well as would be liked, which new ones would look better in that spot. If you are contemplating adding to your garden, be sure not to add an unwanted component: insect or mite pests (or disease) that might be tagging along with your new acquisition.

By |April 13th, 2020|Categories: Scales|

Pest and Weather Models

The Oregon Statewide Integrated Pest Management (IPM) Center has a great collection of online resources to support both commercial growers and home gardeners across the country. Their web-based tools include weather and climate driven models for IPM/pest models, plant disease risk models, crop models, horticultural models, beneficial species models, climate suitability models, and many others.

By |March 22nd, 2020|Categories: Online resources, technology|

The spotted lanternfly makes its first west coast appearance

Last September we published our first post about the potential for the spotted lanternfly, Lycorma delicatula, to be a pest of serious concern to Oregon agriculture. At the time, only a handful of eastern states had reported established populations (Pennsylvania has been the most impacted). More recently, a live adult spotted lanternfly was reported in Davis, California.

By |March 3rd, 2020|Categories: Emerging Pests|