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Landmark Extension tree guide celebrates 70th anniversary with new edition

The new 173-page edition describes more than 125 trees, each illustrated with several color photos.

Kym Pokorny | Mar 26, 2021 | News story

175 - Marie Vicksta and Michael O'Loughlin - Pollinator Habitat on County Roadsides (in English)

Marie Vicksta has been with Yamhill Soil & Water Conservation District since 2010. Marie provides technical assistance to landowners on farm conservation practices to improve water quality, reduce erosion and enhance wildlife habitat....

Andony Melathopoulos | Mar 2021 | Podcast episode

April garden calendar

There are lots of gardening tasks to complete in April, including fertilizing your lawn and preparing soil and raised garden beds. Learn more in this guide.

Dec 2025 | OSU Extension Catalog

174 - Veronica Wignall - Whacking bees for science: Competitive exclusion between honey bees and bumblebees in the UK (in English)

Dr Veronica Wignall is a recent PhD graduate from the Laboratory of Apiculture and Social Insects (LASI), which is based at the University of Sussex in Brighton, southeast UK. Her research explores several aspects of a big ...

Andony Melathopoulos | Mar 2021 | Podcast episode

A better method for controlling leader growth on Christmas trees

Trying to control leader length on true fir Christmas trees has always been a tricky proposition. But now, after years of experimentation, a method using a plant growth regulator has proven successful.

Chal Landgren | Jun 2025 | OSU Extension Catalog

Digital mapping tools: Part 2, printing a topographic map

For a big-picture view of the landscape, sometimes nothing beats the power of a paper map. Save yourself a trip to the store and print out just the map you need from any number of free websites.

Norma Kline, Alicia Christiansen | Apr 2024 | OSU Extension Catalog

Digital mapping tools: Part 1, the basics

Get more out of your smartphone! Free or low-cost digital mapping tools can help you track your path, measure a boundary, calculate area and pinpoint problem areas so you can find them again. You can even map vegetation via satellite imagery.

Norma Kline, Alicia Christiansen | Apr 2024 | OSU Extension Catalog

172 - Theresa Pitts-Singer - Where next for managed solitary bees (in English)

Theresa Pitts-Singer is a Research Entomologist at theUSDA-ARS Pollinating Insects Research Unit in Logan, Utah. Her 18+ years of research on alfalfa leafcutting bees and blue orchard bees focuses on bee reproduction during crop ...

Andony Melathopoulos | Mar 2021 | Podcast episode

173 - Jessica Rendon - Japanese beetle (is no friend of pollinators) (in English)

Jessica Rendon is with the Oregon Department of Agriculture’s Insect Pest Prevention and Management Program. She works alongside her fellow entomologists and colleagues to monitor, identify, and eradicate invasive insect species from ...

Andony Melathopoulos | Mar 2021 | Podcast episode

Pest alert: Invasive zebra mussels arrive in Oregon in "moss" balls sold for aquariums

Pest alert! The highly invasive Zebra mussel has made it into Oregon through moss balls, popular among aquarium hobbyists and commonly sold in pet stores. Invasive species experts say potentially contaminated moss balls should be destroyed.

Adriene Koett-Cronn, Samuel Chan | Mar 2025 | OSU Extension Catalog