This article presents the experimental results for determining the composition of the substrate, light and temperature for growing houseplants. Substrates were prepared in 8 different variants. The properties of the substrates were evaluated on the basis of 3 types: high, medium, and low. The amount of light required for the growth of houseplants is the result of a seasonal study. The effects of daily light fall and outdoor ambient temperature in the interior environment was studied for one year, and the results obtained were tabulated. According to the attitude of plants to light, they were divided into light-loving, semi-shade, shade-loving species.

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This article presents the results of a study of the accumulation of heavy metals (Cu, Zn, Pb, Cd) in the leaves of ornamental trees in two families Magnoliaceae (2 species) and Pinaceae (2 species) in the urban environment of the city of Tashkent. Growing in the Botanical Garden of the Academy of Sciences of Uzbekistan, and on the central streets of Amir Temur in Tashkent. In the leaves of trees in the urban environment, there is an excess of background concentrations of lead, copper and zinc. The maximum content of heavy metals in trees noted in the areas of industrial enterprises and in areas with increased traffic load. Species features of metal accumulation revealed. Ornamental trees with a high metal storage capacity can be useful for phytoremediation of polluted urban areas.

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