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Invasive Species

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Wanting to do some winter weeding? Try English ivy!
Laura Brown | December 11, 2019

What a beautiful show Fall gave us this year! I don’t know about you, but I couldn’t keep my eyes off the brilliant reds, yellows, and oranges that decorated Benton County. Alas, as all the leaves fall and many native species go dormant for the winter, the plant that continues to catch my eye is…you

E.D.R.R… what in the world does that mean?
Laura Brown | January 18, 2019

In the world of invasive species, it’s hard enough to keep up with the new species we should be aware of and then we’re expected to relearn the ever-changing genus/species combinations of plants we thought we already knew… On top of it all, we’re supposed to remember all the acronyms…oh the acronyms! Between SWCD’s (Soil

Tansy Ragwort is in Full Force!
Heath Keirstead | August 5, 2016

What are those bright yellow flowers dotting fields and roadsides? They’re tansy ragwort, and they are toxic!

Faye Yoshihara | March 31, 2016

Find out why ten intrepid students braved the winter weather.

Goats eating blackberries
Goat Power! A Creative Tool for Managing Difficult Invasive Plants
Jamie Powell | September 10, 2015

Goats are helping the City of Albany tackle invasive English ivy.

Volunteers paddling to pull Ludwigia.
Paddling with a Purpose: Pulling Ludwigia on the Willamette River
Jamie Powell | July 30, 2015

Volunteers paddled the Willamette River with one goal in mind: remove invasive water primrose!

Ludwigia hexapetala inlet © A. Neill
Aquatic Weed Guide for Benton County and Beyond
Heath Keirstead | July 9, 2015

Learn to identify 12 pernicious plants that threaten our waterways.

Tansy Ragwort
Control Tansy Ragwort Now to Prevent Poisonings
Cindy Riskin | June 29, 2015

Tansy ragwort is dangerous to livestock and taints milk and honey.

Goat munching ivy
Goats: Hungry to Help You Control Weeds!
Heath Keirstead | August 15, 2014

Goats are becoming a more common weed control option- find out why.

Chrysolina hyperici © M. Evelyn
The Secret Life of a Bio-Control Agent: The St. Johnswort Beetle
Crystal Durbecq | June 16, 2014

While bio-controls, such as the St. Johnswort beetle, may never fully eliminate invasive weeds, it is worth the time to consider the important role these critters play in keeping them in check.

Bee pollinating a camas flower near the Willamette River. © M. Evelyn
Findings from the Willamette River Vegetative Survey and Assessment
Crystal Durbecq | January 15, 2014

The first project of the Willamette Mainstem Cooperative (WMC) was a two-year survey of plants and habitat. Dick Brainerd summed up the findings in a report that is being used as a management tool. This post summarizes the report’s findings.

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