Browse resources

Displaying 1 - 10 of 281 resources

Flatheaded borers in nurseries and orchards

This guide for growers on flatheaded borers in nurseries and orchards explains identification, life cycle, host trees, scouting for damage, and mechanical, cultural, chemical and biological controls.

Lloyd Nackley, Nik Wiman, Heather Andrews, Erica Rudolph, Melissa Scherr | Jan 2026 | OSU Extension Catalog Peer reviewed (Orange level)

Is this a hobo spider?

Q: My neighbor has found this spider (see picture) twice in her house recently. Do you know what type of spider it is? Is it a hobo spider, and is it dangerous?

A: View answer | View all featured questions

This state resource has the most up-to-date information on emerald ash borer in Oregon. View the interactive map and learn what actions you can take. Even though EAB is here to stay, everyone can do something to slow its spread.

Oct 2025 | Online resource

Gallery of insect predators

Beneficial insect predators prey on many common garden pests. Learn to recognize these "good bugs" in their various life stages. Protecting them can help control pest populations in your garden.

Nicole Sanchez, Heather Stoven | Oct 2025 | Educational gallery Peer reviewed (Orange level)

Gallery of parasitoid wasps

Take a tour through this photo gallery and learn to identify parasitoid wasps in your garden. Wasps play key roles in controlling pest populations.

Oct 2025 | Educational gallery Peer reviewed (Orange level)

Emerald ash borer in Oregon: what to do now — and what to plant next

Don’t remove healthy ash preemptively, learn the symptoms and start planning resilient replacements.

Kym Pokorny | Sep 23, 2025 | News story

Oregon State researchers develop forecast model for spotted lanternfly

The forecasts provide surveillance support, targeted control, and highlight regions at high risk of establishment.

Leonard Coop | Sep 2025 | Impact story

OSU Extension finds solutions for cabbage maggot in Oregon vegetables

This work protects the availability of locally grown vegetables, strengthens rural economies and supports sustainable farming practices.

Kristine Buckland | Aug 2025 | Impact story

Extension research leads to change in the management of clover seed weevil

This work is helping growers avoid ineffective pesticide applications, reducing unnecessary environmental exposure and enabling a more sustainable, economically viable pest management program.

Christy Tanner, Navneet Kaur | Jul 2025 | Impact story

Soldier fly larvae: Beneficial compost helpers

Soldier fly larvae are voracious consumers of high nitrogen materials such as kitchen food scraps and manures, as they decay.

Kym Pokorny | Jul 1, 2025 | News story

OSU Extension Service

Insects