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You are here: Home / Archives for Plant Pests and Diseases

Managing Phytophthora: timing, temperature and emerging threats

By Alan Peper — Posted May 20, 2026

Phytophthora root rot is a persistent and economically significant issue in the ornamental nursery industry.

Filed Under: Growing Knowledge, Plant Pests and Diseases Tagged With: Phytophthora

Managing slugs and snails in Pacific Northwest nurseries

By Rory McDonnell — Posted April 22, 2026

and Robin RosettaThe collective scientific name for slugs and snails, Gastropoda, goes a long way towards explaining the headaches that these invertebrates cause nurseries owners throughout the Pacific Northwest. Literally meaning ‘stomach foot’ from the Greek words ‘gastér’ and ‘podòs’, gastropods feed on a large number of ornamental plants. They are also thought to transmit […]

Filed Under: Growing Knowledge, Plant Pests and Diseases Tagged With: pests and dieases, Slugs

OAN leads grower-driven Japanese beetle solution

By Curt Kipp — Posted November 13, 2025

Nurseries likely will need to either pay for detection and trapping themselves, or pay the Oregon Department of Agriculture to have it done.

Filed Under: Nursery News, Plant Pests and Diseases

Prioritizing nursery pest challenges

By Jerry Weiland — Posted March 25, 2025

Nursery industry input is critical to helping IR-4 Project identify most pressing nursery challenges.

Filed Under: Growing Knowledge, Plant Pests and Diseases

New tools in the battle against thrips

By Man-yeon Choi — Posted February 24, 2025

New research shows a promising path to managing this agricultural pest

Filed Under: Growing Knowledge, Insects, Plant Pests and Diseases, Thrips

Aiming for precision in pest control

By Lloyd Nackley — Posted September 26, 2024

Researchers evaluate trunk spray effectiveness of air-blast sprayers with sensors to target Pacific flatheaded borer

Filed Under: Growing Knowledge, Plant Pests and Diseases

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

By Jon Bell — Posted September 26, 2024

The emergency fund is just one component of the ODA’s nursery licensing program. Other pieces aim to keep nursery plants healthy, whether they’re being grown here and shipped out of state or brought in from elsewhere.

Filed Under: Nursery News, Nursery Operations, Plant Pests and Diseases, Retail Garden Centers

$250,000 shifted to P. austrocedri research

By Curt Kipp — Posted September 19, 2024

Officials have quickly reprioritized $250,000 in federal horticulture research funds to immediately begin developing and implementing effective strategies to prevent the spread of Phytophthora austrocedri and minimize its impact on the horticultural industry. P. austrocedri is a destructive pathogen threatening valuable ornamental crops including cypress, arborvitae, juniper, and cedar, which could have serious consequences for nurseries, landscapes, […]

Filed Under: Nursery News, Nursery Operations, Phytophthora, Plant Diseases, Plant Pests and Diseases

New boxwood varieties shore up defense against spreading boxwood blight

By Mitch Lies — Posted September 10, 2024

As boxwood blight was spreading in the U.S. in the 2010s, executives at Plant Development Services in Loxley, Alabama, and Saunders Brothers Nursery in Piney River, Virginia, were looking for solutions. Plant Development Services looked to Europe, where blight had been a major issue since 1998, while Saunders Brothers looked to germplasm it had on […]

Filed Under: Blights, Boxwood Blight, Plant Features, Plant Pests and Diseases

New Phytophthora pathogen — not P. ramorum — found on two nurseries

By Curt Kipp — Posted August 28, 2024

A soilborne plant pathogen not previously seen in the United States — Phytophthora austrocedri — has been detected at two Oregon nurseries and has infested an unknown number of plants. The detections have prompted an aggressive quarantine of some of the plant material on both operations as growers and authorities strive to identify infested areas and contain the pathogen’s […]

Filed Under: Nursery News, Phytophthora, Plant Pests and Diseases Tagged With: pathogens, Pests and Diseases, Plants, Wholesale Nurseries

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NURSERY NEWS

Bailey Nurseries removed dams to build environmental resilience

The new NurseryGuide.com powers up with new features

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

More Nursery News

From the pages of Digger

June: The Shrubs Issue

May 2026: the Sustainability Issue

April: The Tree Issue

March: The Perennials Issue

February: The Greenhouse Issue

More issues of Digger

Pests and Diseases

Managing Phytophthora: timing, temperature and emerging threats

Managing slugs and snails in Pacific Northwest nurseries

OAN leads grower-driven Japanese beetle solution

Prioritizing nursery pest challenges

New tools in the battle against thrips

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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