The willows with high phenolic glycosides concentrations are used in herbal production. The knowledge about these metabolites are well documented, but less is known about macroelement concentration in the bark of herb willows. The aims of this study were to evaluate the content of phenolic glycosides and macroelements in the bark of Salix alba, S. daphnoides and S. purpurea originating from their natural habitats and cultivated on the two different soil types. The study was carried out in 2009 and 2010 on a 5–6 year-old plantation. All the species cultivated on the loess soil were characterized by the highest concentration of phenolic glycosides in the bark. The soil type under willow plantation determined both the content of phenolic glycosides and the content of macroelements in the bark of all the three willow species. Calcium primarily determined the difference in the chemical composition of the bark. Among the species studied, Salix alba was characterized by the highest content of K, Ca and Mg in the bark, compared to the other species studied, irrespective of the soil conditions.

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