When many of us think of thistles we do so with less than charitable thoughts, because most of the thistles…
As the common name suggests Eurasian Watermilfoil is native to Europe and Asia, as well as North Africa. It is…
Floating Marsh Pennywort is a native, wetlands obligate plant, in the family Araliaceae. It forms dense mats on the waters…
This is a common wetlands plant, which blooms from late summer into fall. It is erect, up to 40” tall,…
Broad-leaved Dock is a perennial plant native to Europe, but has become naturalized world wide. It is an invasive species…
This is yet another species which was imported from Europe for cultivation, but escaped to become an invasive and noxious…
This is a large, bushy shrub which grows in muddy and sandy flats along the Snake and Columbia Rivers, often…
Though this is a European species which has escaped cultivation and has become widely naturalized and even invasive in our…
This introduced member of the family Polygonaceae (buckwheats) is a denizen of wetlands and vernally wet areas, and can be…
This is a wildly invasive European native which had become established in North America by the 1830s, both as a…