Author Archive | Sam Leininger

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November’s Weed of the Month: Spurge Laurel

The Scourge of Spurge Laurel Spurge laurel (Daphne laureola) is neither a spurge nor a laurel, but rather an invasive plant in the Daphne family.  This perennial plant has poisonous berries, spreads aggressively in our native forests, and is increasingly being found in Clackamas County. Native to Europe, spurge laurel was introduced in Oregon as […]

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Tansy Ragwort Poisons Livestock and Neighborly Relationships!

Tansy ragwort has long tormented rural landowners who graze livestock. Horses and cows are especially susceptible to this poisonous weed. In open fields, grazing animals will generally avoid eating tansy ragwort, but in heavily infested pastures they may have few other options.  Contaminated hay is particularly a problem because it becomes impossible for feeding animals […]

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It is National Pollinator Week!

It is National Pollinator Week! Join all of us here at the WeedWise program in celebrating our native pollinators. June 22-28, 2019 has been designated as National Pollinator Week and there are activities going on here in Oregon and across the country! Summer is here and the weeds and wildflowers are blooming all around us. […]

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It’s Native Plant Appreciation Week!

Let’s Celebrate! The WeedWise program is in the business of preventing and controlling invasive weeds.  As anyone that spends much time battling invasive weeds can attest, our work can feel a little daunting at times.  We all have those days when we are battling a rather bothersome patch of invasive weeds and lose sight of […]

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Newly discovered organic herbicide shown to be safe and effective against all invasive weeds!  

Invasive weeds can be extremely damaging and pose a real threat to the social, economic, and ecological health of our communities.  One important tool for controlling large infestations of invasive weeds is herbicides. Herbicides have been used to manage large infestations of invasive weeds since the 1940s, but their use is problematic for some growers.  […]

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Combating Invasive Weeds in the Shadow of the Novel Coronavirus

Here at the WeedWise program, we are all too familiar with the science and strategies behind stopping and slowing the spread of harmful threats to our communities.  Topics such as prevention, early detection, rapid response, containment,  exclusion,  and the disruption of vector pathways are not only familiar to us but are also daily discussion topics […]

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Its National Invasive Species Awareness Week!

National Invasive Species Awareness Week (February 24-28, 2020) kicks off today! Each year, folks around the country take a week to consider the many impacts that non-native invasive species have on our communities, working lands, natural areas, and pocketbooks.  So take a moment to celebrate with the WeedWise Program to learn a little more about […]

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