Abstract The distribution of hydroxycinnamoylputrescines in different organs and developmental stages of seven solanaceous species was compared. In flowers of Nicotiana tabacum and Lycopersicon esculentum, caffeoylputrescine accumulates in the pistils, whereas in Nicotiana plumbaginifolia and Capsicum annuum it accumulates in the stamens. The accumulation of hydroxycinnamoylputrescines in floral parts is, however, not a general feature of the Solanaceae, since in potato and Solanum nigrum, levels of these compounds remain low in all organs at all stages of development of the plants. In the underground shoot of field grown plants of Solanum tuberosum ssp. tuberosum neither caffeoylputrescine, nor feruloylputrescine, p-coumaroylputrescine or diferuloylputrescine were found to accumulate during tuber development. These results indicate that hydroxycinnamoylputrescines are not likely to be causally involved in the tuberization process of potato plants and in the flowering process of Solanaceae species.