There are five crabgrass species found in Florida; India, blanket, southern, tropical, and smooth. The blanket and India species are perennials, while southern, tropical, and smooth crabgrasses are annuals. Due to the variations in life cycles, post and pre emergent control methods are available
Herbicide choice depends on the type of grass or grasses currently present in the area to be treated. Always check labels for application rates and specie impacts. The EDIS document Weed Management in Pastures and Rangeland-2017 offer in-depth information on herbicide selection.