Whitehead broom, also known as shrubby false buttonweed or southern larraflower, is becoming problematic in south Florida pastures, hayfields, and rights-of-way. This 2-page fact sheet discusses a few options to control this species. Written by Brent Sellers and James McWhorter, and published by the UF Agronomy Department, August 2016.
http://edis.ifas.ufl.edu/ag409