Tags » Noxious Weeds

Watch for buffalobur popping up in late summer

Buffalobur makes an occasional appearance in King County this time of year.  It comes up in late summer when many other plants have already gone to seed or dried up in the heat. 283 more words

King County

Meadow Goldenrod

Meadow goldenrod (Solidago canadensis) grows from long creeping rhizomes, often carpeting meadows and other open spaces with yellow in the late summer and autumn. 403 more words


Bumper crop of tansy ragwort creating headaches for county workers and homeowners alike

If it seems like there’s more tansy ragwort in your neighborhood this year, you aren’t alone. Tansy ragwort plants are larger and more numerous just about everywhere in King County. 276 more words

King County

It’s official – Washington bans sale of six new plants including yellow archangel, butterfly bush and lesser celandine

Yellow Archangel

Butterfly Bush

Lesser Celandine

Effective July 24, the list of prohibited plants in Washington just grew by six. The species added include several popular ornamental plants that are now prohibited from sale: … 364 more words

Noxious Weeds

Picture of the Week

More than archaeology…

In addition to looking for historic resource sites when in the field we are always on the lookout for noxious weeds like these oxeye daisies. 43 more words


Policeman’s Helmet - July 2016 Weed of the Month

In 1839, seeds of Impatiens glandulifera were sent from their native home in western Himalaya to the Royal Botanic Gardens in Kew, England.   Within 15 years, populations had escaped and naturalized into the English countryside.   1,081 more words

King County