Scorzonera hispanica is a rich source of inulin – a glycoside which has a positive effect on human and animal organisms. The paper presents studies on fungi threatening the cultivation of scorzonera. Soil mulching with intercrop cover crops such as oats, tansy phacelia and spring vetch had a positive effect on the population and healthiness of the seedlings and the roots of the studied plant. The following fungi were most frequently isolated from the infected underground organs of scorzonera: Alternaria alternata, A. scorzonerae, Botrytis cinerea, Cylindrocarpon didymum, Fusarium culmorum, F. oxysporum, F. solani, Rhizoctonia solani, Phytophthora sp. and Sclerotinia sclerotiorum. Among the applied mulching plants, oats proved to be the most effective in inhibiting the occurrence of the enumerated fungi species.

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