The Washington State Noxious Weed Control Board is considering several significant changes for next year’s state noxious weed list. These include adding small-flowered jewelweed (Impatiens parviflora) and European coltsfoot (Tussilago farfara) as Class A and B noxious weeds, respectively—additions originally proposed… Read More ›
noxious weed
Free class on noxious weed identification and control offered on October 30
It might look like the weeds won this year, but you can start gearing up for next year by attending a free class on noxious weeds and invasive plants being offered by the King County Noxious Weed Control Program. It is… Read More ›
King County Controls a New Noxious Weed!
It’s not every day you find a new noxious weed in your county, but this August King County had one of those days. On August 15th, our program was alerted to an infestation of the Class A noxious weed ricefield… Read More ›
It’s Time to Kill Your Knotweed!
It’s that time of year again: the weather’s hot, the ice cream stands are open, and King County’s invasive knotweeds (Polygonum spp.) are in full bloom. Don’t worry too much about your knotweed going to seed: King County’s most common… Read More ›
Native Plants Saved by Noxious Weed Control
Invasive plants are a menace for a lot of reasons: They can cause serious harm to humans and animals; lower farmers’ crop yields; damage the mountains and lakes we love to visit, cutting back the tourism revenue for surrounding communities;… Read More ›
Who’s Who? Noxious Weeds and their Look-Alikes
Weed Specialist Mary Fee paces through the wetlands at Dumas Bay Wildlife Sanctuary, scanning the cattails around her. Every few dozen feet she stops to inspect a smaller plant growing among them. She’s looking for perennial pepperweed (Lepidium latifolium),… Read More ›
EarthCorps noxious weed training teaches practical skills and combats knotweed at the same time
On a sunny day in Snoqualmie with Mount Si in the background, 40 EarthCorps crew members donned their safety gear and got hands-on training in noxious weed control from the King County Noxious Weed Control Program. This enthusiastic group of… Read More ›
Spotted Knapweed – June 2017 Weed of the Month
What’s five feet tall, has pink or purple flowers with spotted bracts, and costs the state of Montana $42 million each year? If you answered spotted knapweed (Centaurea stoebe), you’re right! A native to grassland steppes between central Europe and… Read More ›
Weeds to Watch Out For: June 2017
Enjoying the recent spell of sunny weather? You’re not the only one: Across King County, a number of noxious weeds are already bolting, flowering, or going to seed, and our Weed Specialists are working hard to keep them under control…. Read More ›
Biocontrol Agents: Noxious Weed Control’s Unsung Heroes
On a cold and rainy May morning, I walk with Weed Specialist Karen Peterson along the bluffs at the west edge of Seattle’s Discovery Park. As usual, we’re here to control weeds—in this case, a large stand of Scotch broom (Cytisus… Read More ›