Mike from Okc. Ok writes
Pendulum 3.3 EC Herbicide will not control established or actively growing weeds, rather it is a pre-emergent that stops susceptible weeds from germinating and growing, eventually causing them to die before they ever emerge from the soil. Please see our Post Emergent Herbicides for products that will kill weeds that have already emerged in your lawn.
Answer last updated on: 04/16/2019