Abstract: At least water-emulsifiable plant growth regulators, especially for inhibiting the growth of sucker shoots of tobacco plants, consisting of fatty acid polyoxyethylene glycol ester mixtures obtained by ethoxylating fatty acids having from 6 to 12 carbon atoms with from 4 to 8 mols of ethylene oxide per mol of fatty acid; as well as the process of inhibiting the undesired growth of plants, particularly the growth of sucker shoots of tobacco plants, by the application of aqueous solutions or emulsions of the above plant growth emulsifiers to the plants.