What’s That Weed?
Interested in learning more about invasive plants? Check out the weed workshop we’re hosting, put on by the East Multnomah Soil and Water Conservation District! Pokeweed (Phytolacca americana) Characteristics: American […]
What’s That Weed?
Invasive: Knotweeds–Japanese, giant, Bohemian (Reynoutria spp., aka Fallopia, Polygonum) Characteristics: Knotweeds are tall, perennial members of the buckwheat family. Rocketing out of the ground in late March, they can reach
What’s That Weed?
Invasive: Giant hogweed (Heracleum mantegazzianum) Characteristics: Giant hogweed is a very large member of the carrot family, reaching as much as 4.5 m (15 ft) in height. First-year growth is
What’s That Weed?
Invasive: Tree of Heaven (Ailanthus altissima) Characteristics: Tree of Heaven—also called Chinese sumac or stinking sumac—is one of the great misnomers in the plant world. It is a weedy, fast-growing
What’s That Weed?
Invasive: Yellow archangel (Lamiastrum galeobdolon) Characteristics: Yellow archangel, or yellow Lamium, is a fast-growing, rhizomatous, trailing (sometimes upright) perennial ground cover. Stems are square in cross-section, and are typically less