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
What’s That Weed?
Invasive: Italian Arum (Arum italicum) Characteristics: Italian Arum—a.k.a. Lords and Ladies—is a tuberous perennial, growing to 12 inches high. It has glossy, arrow-shaped leaves up to 14 inches long, with
