Noxious Weeds Blog

All things noxious weeds. Written by program specialists in King County, Washington

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Tag: weeds

Knotweed infestation through seasons: lush green, to yellowing, to dead canes
December 20, 2023June 20, 2024 kcweeds

What is Plant Dormancy & Why Does it Matter?

English ivy hanging basket in a plant nursery
October 18, 2023March 8, 2024 kcweeds

Noxious Weeds & Prohibited Plants: A Listing Guide

A visual of mulching layers. The top later is 4-12 inches of heavy mulch, which is defined as arborist chips or bark/coarse mulch. The second layer is a paper layer, comprised of cardboard or newspaper. The final layer is weeded soil. 1-2 inches of compost layer are also interspersed throughout.
September 22, 2023December 20, 2023 kcweeds

Weedy Fall Activities

orange fire blaze on woody branching plants, 2 firefighters blurred in background
September 6, 2023December 6, 2023 kcweeds

Weeds and Wildfire 

June 20, 2023September 22, 2023 kcweeds

Learn to Identify Plants

1 larger photo of yellow flower in field on left, 3 stacked photos on right of flowers: purple poofy, yellow with heart shaped petals, and white trumpet shaped
June 20, 2023June 20, 2025 kcweeds

Summer Weeds to Watch for

Green leaves with droplets of water and white veins are attached to a stem. One yellow flower with five petals blooms on this same stem.
June 20, 2023July 25, 2023 kcweeds

Early Weed Detection Protects Wetlands

March 20, 2023June 20, 2023 kcweeds

Spring Cleaning – Get into the Weeds

February 8, 2022March 20, 2023 kcweeds

The 2022 King County Noxious Weed List is official!

January 12, 2022March 20, 2023 kcweeds

Old man’s beard – January 2022 Weed of the Month

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