King County noxious weed specialist bagging the flowering tops of tansy ragwort after removal.

What do I do with all those weeds I pulled?

Some weeds just won’t die, even after they are uprooted. Tossing them on a brush pile might actually give them a second chance at life. Yellow archangel infestations often start from yard waste piles or discarded container plantings. Tansy ragwort will make a fairy ring of new plants around burn piles because the seeds spread in the…

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New forest invader called small-flowered jewelweed discovered on Novelty Hill Rd

King County weed specialists recently responded to a report of a new forest invader called small-flowered jewelweed found along Novelty Hill Rd just east of Redmond Ridge. This central Asian species is a widespread invasive plant in European forests, but is still highly localized in North America. According to a 2013 USDA-APHIS report, it is being…

Butterfly Bush

It’s official – Washington bans sale of six new plants including yellow archangel, butterfly bush and 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: butterfly bush (non-sterile varieties), yellow archangel, lesser celandine and all hybrid non-native hawkweeds, including a type of orange hawkweed that was until very recently still being sold in…