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You are here: Home / Archives for Growing Knowledge

Growing Knowledge archive

Note: This article is part of the Growing Knowledge series in Digger magazine. This series is provided by Oregon State University in collaboration with the United States Department of Agriculture and in partnership with the Oregon Association of Nurseries.

Researchers explore how to best help trees through days of high heat

By Lloyd Nackley — Posted July 22, 2026

Dalyn McCauley and Clint Taylor By the middle of a hot summer afternoon, most of us make the same decision. We look for someplace cool. It might be the shade of a porch, beneath the canopy of a favorite tree, or the comfort of an air-conditioned office. At a nursery, crews naturally shift the day’s […]

Filed Under: Growing Knowledge

Box tree moths pose a threat to Oregon nurseries

By Jana Lee — Posted June 22, 2026

While box tree moth has not been detected in Oregon, this pest is of great concern since Oregon is the top producer of boxwoods in the country, followed by California and Ohio.

Filed Under: Growing Knowledge, Insects, Plant Pests and Diseases Tagged With: Box Tree Moth

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

 Managing powdery mildew with biological fungicides

By Brent Warneke — Posted March 24, 2026

Interest in natural treatment methods is being driven by concerns over resistance
and the desire for reduced-risk pest management.

Filed Under: Growing Knowledge

OSU’s study of native plants gives insights into preferences of gardeners and pollinators

By Jen Hayes — Posted February 24, 2026

and Gail Langellotto Native plants have greatly increased in popularity among gardeners over the past several years, in part due to these plants’ purported value to bees and other pollinators. However, many native plants are difficult to grow and finish at scale in modern nursery production systems. Also, some native plants are viewed as too […]

Filed Under: Growing Knowledge

Oregon nurseries light the way for houseplants

By Lloyd Nackley — Posted January 23, 2026

Winter production in Oregon has a familiar dark side: month after month where sunshine is in short supply.

Filed Under: Growing Knowledge

With trees, size matters

By Lloyd Nackley — Posted January 6, 2026

Measuring tree growth from Ticknor to today

Filed Under: Growing Knowledge

Adaptable, not just marketable

By Lloyd Nackley — Posted November 24, 2025

Public interest surges in climate-ready plants, but what does that mean?

Filed Under: Growing Knowledge

The 2025 IPPS Western Region meeting in Canada offered growers many chances to connect and learn

By Lloyd Nackley — Posted October 21, 2025

From cutting-edge technology in tissue culture labs to sprawling nursery production facilities, the conference showcased both innovation and scale

Filed Under: Growing Knowledge

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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

August 2026 Digger: Farwest Show Edition

July 2026

June: The Shrubs Issue

May 2026: the Sustainability Issue

April: The Tree Issue

More issues of Digger

Pests and Diseases

Box tree moths pose a threat to Oregon nurseries

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

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

OAN members see benefits and rewards from serving ag industry organizations

AmericanHort president and CEO to step down

OAN honors industry leaders at 2025 Convention

More member stories

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