Five-stamen tamarisk, an important phreatophyte in the southwestern United States, is difficult to eradicate for water salvage. There also is increasing opposition to its eradication because this species provides cover for wildlife and greenery in the environment. The application of nontoxic antitranspirant sprays to reduce tamarisk transpiration may be an alternative to eradication. Several antitranspirants were tested including a combination of the monomethyl and monoglyceryl esters of n-decenylsuccinic acid (MDSA-GDSA), 8-hydroxyquinoline sulfate (8-HQS), and phenylmercuric acetate (PMA), on tamarisk in greenhouse and field environments. (Author)