Invasive Species

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Strategies for managing weeds

Zapping weeds, keeping railroad crossings clear, and preventing herbicide resistance. More

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Bird-B-Gone Repeller 360°

The Repeller 360° rotates in the wind to deter large birds from landing on... More

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Creating stable and healthy roadsides

Using selective herbicides — and knowing how to use them — will keep your... More

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Designing smart ponds

“Smart ponds” are a result of proper design and maintenance More

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Turf, Grounds, and Roadside Maintenance March 2010
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Construction equipment 2010
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The war against weeds

Located just across the Columbia River from Portland, Ore., historic Clark County attracts visitors who enjoy open spaces. But there are some visitors for whom the county would rather not play host: knapweed, poison hemlock, and butterfly bush, to name just a few. More

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