…WeedWise program or consult the Pacific Northwest Weed Management Handbook for the most up-to-date herbicide recommendations. Report Invasive Weeds Have you noticed invasive spurge laurel in your area? If so, please report your […]
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UPDATED: Request for Proposals: Priority Invasive Weed and Vegetation Management
…Heather Nielsen Category: WeedWise Date: October 31, 2024 0.7 MB 52 Downloads Details… Addendum II: Proposal Forms (locked) RFP-2024-WW-01-Proposal-Docs-lockedFINAL.docx Version: 1.0 RFP #2024-WW-01 Proposal Docs (locked)(FINAL) Author: Samuel Leininger, Heather Nielsen Category: WeedWise […]
October Invasive Weed of the Month: Himalayan Blackberry
…not pack or ship well so you won’t find them in stores. This makes them an ideal plant to grow at home! Learn More For more detailed information on Himalayan blackberry control, check […]
September Invasive Weed of the Month: Japanese Knotweed
…more than one year. While there are mechanical or manual control options for small patches, large sites will almost certainly require integrating herbicide use into your control strategy. For more information on how […]
Tips to Tackle and Control Blackberry
…down into its root system. Plants should not be cut or removed for at least two weeks following an herbicide application. Learn More For more detailed information on hrbicide and other forms of […]
August Invasive Weed of the Month: Puncturevine
…on chemical control of this invasive plant, please contact our WeedWise team at 503-210-6000. Report Puncturevine! Have you noticed invasive puncturevine in your area? If so, please report your sightings to the District’s […]
We’re Celebrating 50 Years of Conservation!!
…voluntary and non-regulatory manner. Take a look at what we do: Our WeedWise Department actively manages priority invasive weeds from remote destinations in the Mt Hood National Forest and to the rural and […]
Clean Your Boots to Protect Our Natural Areas
Clean your boots! And your sneakers, sandals, and flip-flops too. Give them a quick check before and after you hike to prevent the spread of invasive weeds. Summer is here and that means […]
Tansy Poisons Livestock – and Neighborly Relationships!
Tansy Ragwort IS manageable. Tansy ragwort (Jacobaea vulgaris) has long tormented hay producers and rural landowners who graze livestock. Horses and cows are especially susceptible to this poisonous weed. In open fields, grazing […]
