Weed of the Week - Henbit

Henbit (Lamium amplexicaule)

Henbit is a winter annual that is commonly found across Canada and the US.  Henbit is a winter annual that reproduces by seed starting its life cycle in the fall when the seeds germinate.  It overwinters and flowers in the spring.  Henbit is often mistaken for another closely related winter annual broadleaf weed, purple deadnettle. 

Life Cycle – winter annual broadleaf weed

Growth Habit – Prostrate

Leaves – hairy, Broad, rounded, deeply lobbed, somewhat heart shaped

Roots – fibrous root system

Flower Colour – Purple to pink

Control – Easy to control

Both of these weeds have purple to pink flowers, but the leaves of the purple deadnettle are more reddish in colour, triangular, and not as deeply lobbed as Henbit.  Henbit is a member of the mint family and grows upright.  The stems of henbit are square and grow 4 – 16” in height.  Stems that are weak can grow horizontal along the ground.  

 

Henbit is generally considered an easy to control weed that can effectively be controlled with post emergent applications throughout the season.   

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