Lamium purpureum
broadleaf weedUSDA zones 3–10Active: spring, winterWinter annual closely related to henbit. Distinguished by purplish-red upper leaves. Often grows alongside henbit in cool-season weed flushes.
Square stems; triangular leaves with purplish-red color at top; pink-purple tubular flowers; lower leaves green and petioled.
Prevent germination with thick turf. Same approach as henbit (closely related).
When: Fall overseeding and fertilization
Shallow-rooted winter annual. Pull before spring flowering and seed set.
When: Pull in late winter/early spring
Three-way herbicide controls deadnettle. Same products effective on henbit.
When: Apply in fall or early spring
Active ingredient: 2,4-D + Dicamba — e.g. Trimec, Weed Free Zone
Grass safety: always match herbicides to your grass species — products safe on Kentucky bluegrass can kill St. Augustine or centipede. Lawn Guardian checks this automatically against your lawn profile.
Lawn Guardian turns this guidance into a schedule timed to your USDA zone and this week's actual weather — and adapts every time you log what you've done.
Get your free plan