Lower leaves long-petioled, rounded or coarsely lobed or toothed. Plant 6 inches to 1 foot tall. Dark green leaves, not hairy, with slight reddish tint possible.
Upper leaves are sessile around the stem and coarsely toothed.
Is similar to red deadnettle, but is distinguished by the lack of petioles on upper leaves. They are borne in dense clusters in upper leaf axils. Winter annual germinating in late summer and growing throughout the winter.