An experiment about herbicide use on cauliflower (Brassica oleracea var. botrytis) crop was conducted in the Experimental Field of Horticulture Section DAH-ESALQ, Piracicaba, Brazil. It was tested Dacthal (DCPA), Tenoran (chloroxuron), Afalon (linuron) and Ramrod (propachlor). Dacthal, Ramrod and Tenoran were not fitotoxic to cauliflower, and Afa-lon was very toxic. The herbicide that gave the best results to cauliflower was Ramrod.