Subject: Purple deadnettle (Lamium purpureum) Description: Purple deadnettle–and its look-alike relative, henbit (L. amplexicaule)–are short (usually less than 1′, or 30 cm), annual members of the mint family. Why “dead […]

Invasive: Hairy bittercress (Cardamine hirsuta) Video field exploration This month’s weed is less of a threat to natural areas than many featured weeds–though it does show up there–but is one

Invasive:  Mole Plant (Euphorbia lathyrus) Characteristics:  Mole plant—a.k.a. gopher spurge or caper spurge—is an erect biennial (occasionally annual) herb, native to the Mediterranean region and eastward to western China.  It

Invasive:  Scotch broom (Cytisus scoparius) Characteristics:  Scotch broom is a perennial member of the pea family (Fabaceae).  It is a deciduous shrub, 1-3 m (3 to 10 ft) tall, though

Weed of the Month:  Herb-Robert (Geranium robertianum) Characteristics: Herb-Robert—also called Robert’s geranium, or, colloquially, “stinky Bob”—is both a winter and spring annual with light-green, deeply dissected leaves. In late fall