Variety traits
Rosa L.
Double-flowering is a decorative trait in roses defined by the number of petals in a flower, which varies from simple forms with fewer than 8 petals to very double forms having over 70.
In the reference 1 377 varieties crop Rose, where this is mentioned in the description.
The classification of roses by the degree of double-flowering includes simple forms (up to 8 petals), semi-double (8–15), moderately double (21–29), medium double (30–39), double (more than 40), and very double (over 70 petals). This trait is often associated with the transformation of stamens and pistils into petals, which, in extreme cases, leads to the reduction of reproductive organs and the necessity for vegetative propagation only.
A high degree of double-flowering increases the decorative appeal of the flower, but it decreases its resistance to atmospheric precipitation, causing the petals to become waterlogged and rot. The stability of this trait depends on growing conditions and the age of the plant, while for commercial cut flower varieties, double-flowering is a targeted breeding trait.
General information about the subject — on the page Double flowering / Reversion.
Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.
Rosa L. · Rose
Samuel McGredy
Rosa L. · Rose
SNC Meilland et Cie
Rosa L. · Rose
Meilland, Alain A.|Antibes, France
Rosa L. · Rose
MEILLAND STAR ROSE
Rosa L. · Rose
W. KORDES'SOHNE ROSENSCHULEN GMBH & CO KG
Rosa L. · Rose
Meilland, Alain A.|Antibes, France
Rosa L. · Rose
Wilhelm Kordes / Tim-Hermann Kordes / Margarita Kordes in Fa. W. Kordes' Söhne Rosenschulen GmbH & Co KG
Rosa L. · Rose
INTERPLANT BV (NL)
Rosa L. · Rose
Weeks Wholesale Rose Grower Inc.
Rosa L. · Rose
Rosen Tantau KG
Rosa L. · Rose
Rosen-Tantau Mathias Tantau Nachfolger
Rosa L. · Rose
Poulsen Roser A/S
Rosa L. · Rose
Poulsen Roser A/S
Rosa L. · Rose
Poulsen Roser AS, DK - 3480 Fredensborg
Rosa L. · Rose
Poulsen Roser A/S
Rosa L. · Rose
Poulsen Roser A/S
Rosa L. · Rose
Poulsen Roser Aps (DK)
Rosa L. · Rose
Poulsen Roser AS, DK - 3480 Fredensborg
Rosa L. · Rose
WERNER NOACK
Rosa L. · Rose
ALAIN MEILLAND
Rosa L. · Rose
Wilhelm Kordes, W. Kordes' Sohne Rosenschulen GmbH & Co KG
Rosa L. · Rose
Wilhelm Kordes,Tim-Hermann Kordes,Margarita Kordes
Rosa L. · Rose
Wilhelm Kordes, W Kordes' Sohne
Rosa L. · Rose
Poulsen Roser A/S