The work was developed in the municipality of Abreus, Cienfuegos province between January and February 2013. The objective was to determine the effectiveness of the watery extract of Euphorbia lactea Haw for the control of Plutella xylostella L. in the cabbage crop (Brassica oleracea L.). Bioprepared was obtained fractioning pieces among 3 to 5 cm of young shafts of E. lactea in mature plants of 2-3 m of height. 3 kg of the vegetable fractions was deposited in 10 L of water,(proportion 0, 3 kg L-1), remaining the mixture in rest during
