Floribundity is defined as “the capacity of a plant to produce abundant flowers at high density on each of its branches” (http://fr.wiktionary.org/, 10/11/2012). However, should we take into account the number of flowers at peak flowering or throughout the year? In its guidelines, UPOV specifies that all observations should be made when the plant is in full flower (UPOV, 2010). Hereafter, we refer to this measurement as the peak floribundity index. The longitudinal floribundity index is the variation of the floribundity index during a season. Another related question concerns the stage at which flowers should be counted. Should we count all flowers, regardless of their stage of development (buds, opened, withered, rose hips) or only fully opened flowers? If we focus on the vitality of the plant, it would be tempting to consider all the flowers. However, if we are more concerned about visual quality, we may wish to restrict the flower count to opened flowers – that is, flowers with visible petals – and rosehips. Indeed, these two types of organ are brightly coloured and stand out from the foliage of the rosebush, which is usually green once the leaves have fully emerged. The peak floribundity index reported here takes into account all flowers but not the rosehips, whereas the longitudinal floribundity index takes only open flowers into account. We characterised floribundity by three types of methods or methodologies: the morphometric methodology, the sensory methodology and the UPOV methodology. The flower and leaf dimensions were characterised by the morphometric and UPOV methodologies.