Substituted azolylcyclopropyl-azolylmethyl-carbinol derivatives of the formula ##STR1## in which Ar is optionally substituted aryl or optionally substituted heteroaryl,R is hydrogen, alkyl, alkenyl, alkinyl, trialkylsilyl, optionally substituted phenylalkyl or an acyl radical, andX and Y each independently is a nitrogen atom or a CH group,and addition products thereof with acids and metal salts are effective in regulating plant growth and combating fungi. New intermediates are described, some of which are themselves active.