The results of gas chromatographical identification of hexane soluble plant metabolites after lindane treatment of the plants in hydroculture are presented. The plants involved in these experiments were the dicotyledonous garden bean (Phaseolus vulgaris) and the monocotyledonous maize plant (Zea mays). The gas chromatogram of the hexane extract of the bean plants showed lindane (in a concentration of 20 ppm in the plant material) and two additional peaks, which were identified as γ pentachlorocyclohexene (4 ppm) and 1,2,4 trichlorobenzol (0.36 ppm). The maize extract contained unchanged lindane, γ pentachlorocyclohexene (5 ppm), 1,2,4 trichlorobenzol (0.30 ppm), and 1,2,3 trichlorobenzol (0.14 ppm).