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You are here: Home / Archives for Pests and Diseases

Soilborne diseases of nursery crops

By Jerry Weiland — Posted July 1, 2015

USDA-ARS and OSU team up to tackle this pernicious problem

Filed Under: Growing Knowledge, Phytophthora, Plant Pests and Diseases, Pythium Root Rot, Root Rots, Verticillium Root Rot Tagged With: Digger, Digger magazine, Pests and Diseases

Beneficials beyond the greenhouse

By Chal Landgren — Posted March 2, 2015

Scientists track the use of predatory insects for aphid control in
Christmas tree farms.

Filed Under: Growing Knowledge Tagged With: Pests and Diseases

Forestry official: Inspections miss 72 percent of plant pests

By Peter Szymczak — Posted February 3, 2015

According to a story published by Capital Press, the importation of live plants into Oregon and the U.S. is a primary pathway for invasive insects and pathogens, some of which could cause severe damage to forests and nurseries. The statement was made by Wyatt Williams, an invasive species specialist with the Oregon Department of Forestry […]

Filed Under: Nursery News Tagged With: Pests and Diseases

Red palm weevil eradicated from California

By Peter Szymczak — Posted January 29, 2015

The USDA’s Animal and Plant Health Inspection Service (APHIS) declared the eradication of red palm weevil (Rhynchophorus ferrugineus) from the Laguna Beach area of Orange County, California. The pest was first discovered in August 2010. Red palm weevil is one of three giant palm weevils that are native to Southeast Asia and known to occur […]

Filed Under: Nursery News Tagged With: Pests and Diseases

OSU receives $3 million grant to study destructive pathogens

By Curt Kipp — Posted December 3, 2014

Agrobacterium tumefaciens creates cancer-like galls on the roots of plants such as Gaillardia. (Photo by OSU Plant Clinic) Oregon State University announced plans to use a $3 million grant to study two groups of bacteria that result in millions of dollars in losses annually to the nation’s nursery industry. According to a press release, OSU researchers […]

Filed Under: Nursery News Tagged With: Extension, Grants, Oregon State University, Pests and Diseases, Phytophthora ramorum, Plants, Research, Science

Spotting the spotted lanternfly

By Curt Kipp — Posted November 7, 2014

Spotted lanternfly. Photograph by Lawrence Barringer, Pennsylvania Department of Agriculture According to a tip from OSU Extension entomologist Robin Rosetta, a new insect pest — the spotted lanternfly (Lycorma delicatula) — was recently detected in Berks County, Pennsylvania. In response, the Pennsylvania Department of Agriculture announced a quarantine with the intent to restrict the movement of this pest. This […]

Filed Under: Nursery News Tagged With: Invasive species, Pests and Diseases

Sluggy trees aren’t coming to town

By Curt Kipp — Posted November 6, 2014

As reported by KGW-8 (Portland, Oregon), OAN member Christmas tree grower Kirk International Inc. has come up with a novel way to remove hitchhiking slugs from its trees — hot showers. This allows the trees to be shipped to a number of overseas markets that have strict rules about invasive species — places like Hawaii, Guam and […]

Filed Under: Nursery News Tagged With: Christmas trees, Invasive species, OAN Members, Pests and Diseases, Trees

Brown marmorated stink bug sightings increase

By Curt Kipp — Posted October 7, 2014

There’s been a sharp uptick in reported sightings of the brown marmorated stink bug (Halyomorpha halys), an invasive insect which can cause heavy damage in home gardens as well production nurseries. The insects are known to enjoy munching on cucumbers, raspberries, beans and several types of ornamental plants and trees. According to a report on […]

Filed Under: Nursery News Tagged With: Invasive species, Oregon Department of Agriculture, Oregon State University, Pests and Diseases

Rogg taking over for Hilburn at ODA Plant Program

By Curt Kipp — Posted October 7, 2014

Dr. Helmuth Rogg (pictured) has been appointed the new director of the Oregon Department of Agriculture Plant Program Area. He replaces Dan Hilburn, who will retire at the end of October. Rogg has served as the manager of the ODA’s Insect Pest Prevention and Management Program since 2008, and was an entomologist with ODA for […]

Filed Under: Nursery News Tagged With: ODA, Oregon Department of Agriculture, People, Pests and Diseases, Regulations

State officials find no evidence linking dead bees to pesticides


By Curt Kipp — Posted August 12, 2014

A laboratory analysis of dead honeybee samples taken from hives in Clackamas County this summer showed no detection of pesticides, according to the Oregon Department of Agriculture. Officials said that other factors are likely to be responsible for the death of thousands of bees from colonies owned by four local beekeepers. In addition, Oregon State […]

Filed Under: Uncategorized Tagged With: Bees, Chemicals, OAN, ODA, Oregon Department of Agriculture, Oregon State University, Pesticides, Pests and Diseases, Science

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NURSERY NEWS

Terra Gardens owner’s gesture for his mother opens the door to other wheelchair-bound gardeners

OAN announces 2025 Friends of Nurseries award winners

OAN leads grower-driven Japanese beetle solution

AmericanHort president and CEO to step down

In memoriam: Bill Van Belle

Longtime employee buys Heritage Seedlings and Liners

In Memoriam: Melvin John Steffenson

New USDA Census of Hort arriving in mailboxes this month

More Nursery News

From the pages of Digger

March: The Perennials Issue

February: The Greenhouse Issue

January 2026: The Retail Issue

November 2025: The Transportation Issue

October 2025

More issues of Digger

Pests and Diseases

OAN leads grower-driven Japanese beetle solution

Prioritizing nursery pest challenges

New tools in the battle against thrips

Aiming for precision in pest control

Oregon’s nursery licensing program aims to keep the entire industry healthy

More articles

FARWEST SHOW UPDATES

2026 Farwest Show issues calls for speakers

Excitement, optimism prevail at 2025 Farwest Show

Dazzling plants, products garner Retailer’s Choice Awards

Youngblood Nursery wins Best in Show booth honors at the 2025 Farwest Show

Glow Sticks Fescue wins top honors from judges at Farwest Show’s New Varieties Showcase 

More Updates from Farwest

The Value of Membership

AmericanHort president and CEO to step down

OAN honors industry leaders at 2025 Convention

Meet the Leader: Patrick Peterson

More member stories

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