Lambsquarters is a widespread weed in the state. It thrives on rich soils so is a problem in gardens and farm fields. It enjoys some favor with the natural food folks. The triangular leaf is the chief identifying feature. A related plant, Mexican tea (Chenopodium ambrosioides), is used as a vermifuge. Often found growing near barns.
Photo by Dr. John Meade, weed scientist emeritus
Rutgers NJAES Cooperative Extension