This time of year, you may notice low clumps of bull thistle growing along trails or in disturbed grassy areas. Bull thistle (Cirsium vulgare) is also called spear thistle, which perfectly describes the mean-looking, spear-shaped leaves armed with sharp spines… Read More ›
The 2021 King County Noxious Weed List, adopted by the Noxious Weed Board at its January meeting, gained two new species and a number of plant name changes. The first addition to the list is a new Class A noxious… Read More ›
In mid-November 2020, a highly observant second grader and her parent reported seeing Egeria densa in Duvall’s Lake Rasmussen. Egeria, also called Brazilian elodea, is a densely growing underwater plant native to Brazil and Argentina that was accidentally introduced to… Read More ›
To protect people and the environment from harmful plants, the King County Noxious Weed Board will be adopting the 2021 noxious weed list at a public meeting on January 27 in order to set the priority level of noxious weeds… Read More ›
Crossposted from the King County Downstream blog, originally posted on September 25, 2020. By Gavin Tiemeyer. What does it take to be a Noxious Weed Control Specialist with King County? Prior to the pandemic and public health social distancing measures,… Read More ›
Fragrant water lily (Nymphaea odorata) has many redeeming qualities as well as causing significant problems here in Washington. This species of water lily is native to the eastern and central United States and is used both by people and wildlife,… Read More ›
If you live on a lake or creek and want to control weeds in the water or along the shoreline, it’s important to do some research first. Because of the risk of impacting water quality with any weed control method,… Read More ›
The King County Noxious Weed Program is holding a two-part online seminar on September 23 and 30 packed with great information for anyone working on managing invasive plants and noxious weeds. Topics include early detection species, best management practices for… Read More ›
As if 2020 wasn’t hard enough, tansy ragwort is exploding this year! Noxious weed specialists who have worked on it for a decade or more think it is one of the worst years they’ve seen. Is it just the bad… Read More ›
False brome is not your ordinary grass species. This introduced bunch grass spreads into shaded woodlands and can carpet the forest floor, excluding native species and increasing fire risk. Sometimes used as an ornamental grass, false brome (Brachypodium sylvaticum) first… Read More ›
