Patch of garlic mustard emerging in early March. Most of the leaves are still small, but will increase in size over the next few weeks.

Noxious weeds starting to emerge in early March

It might still be snowing in the mountains, but it’s not too early to find noxious weeds starting to emerge. On a recent tour of a few Seattle locations with noxious weed specialist Karen Peterson, I was able to find quite an assortment. We found garlic mustard rosettes that survived the winter starting to grow again.…

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…

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…