Purple deadnettle is a winter annual that occurs throughout the United States. It is generally more prevalent in fertile , moist soils. Purple deadnettle is more erect than henbit and can grow from 6 to 18 in. in height. It has square , purplish branched stems which can root from the nodes . The leaves are somewhat heart-shaped and hairy.
Henbit is typically a winter annual that usually germinates in early fall.
It also germinates to a certain extent in early spring . Henbit, a member of the mint family, has a typical square stem. The leaves are rounded , coarse-toothed , hairy , deeply veined, and grow opposite each other on the main branches. The flowers are trumpet-shaped and pale purple . Henbit is primarily an upright grower but can root and vine from nodes .