Author Archive | Sam Leininger


July’s Weed of the Month!

We are once again partnering with our friends from the Columbia Gorge Cooperative Weed Management Area to feature invasive knapweeds as the target weed for the month of July. Clackamas County has many kinds of knapweed, but the three most commonly found in our area are Spotted, Diffuse and Meadow.  Although slightly different, they all […]

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pollinator header

National Pollinator Week!

Summer is here and the weeds and wildflowers are blooming all around us. With the burst of summer color, come the many bees, flies, beetles, moths, and butterflies that serve to pollinate these plants. Pollinators are vitally important to the health of our natural areas and local economies.  Invasive weeds can play an important role […]

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Its Hay Season!

If you own livestock, now is the perfect time to secure your forage for the year.  Hay production is at its peak, and there are lots of producers with ample supply.  When purchasing hay it is important to consider the potential for introducing weeds through contaminated hay.  One strategy to reduce the risk is to […]

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Blessed Milkthistle invading pasture lands.

Where do you start when you are dealing with 20 acres of pasture land heavily infested with Blessed milkthistle? The first step is to call the WeedWise program!  We were recently contacted by a landowner with this impressive stand of Blessed milkthistle (Silybum marianum) growing in horse pasture lands. The landowner was feeling very overwhelmed […]

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Scotch broom flowers

June’s Weed of the Month!

Its June, and that means its time for a new Weed of the Month! We are working with our partners at the Columbia Gorge Cooperative Weed Management Area to promote Scotch Broom (Cytisus scoparius) as our weed-of-the-month for June. Scotch broom was introduced as an ornamental along highway corridors and in western Oregon as a […]

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WeedWise Program