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Variety traits

Rose flower diameter

Rosa L.

A key morphological characteristic of the rose used for varietal identification, assessment of commercial quality in breeding, and categorization of varieties by purpose.

In the reference 106 varieties crop Rose, where this is mentioned in the description.

According to the UPOV guidelines, the diameter is measured on a fully opened flower whose petals are carefully flattened horizontally for data accuracy. The value is recorded in centimeters and serves as a baseline parameter when creating a variety passport, with specific values varying significantly depending on the varietal group: from small in border and polyantha roses to large ones, reaching 15–16 cm, in hybrid teas.

In agronomy and breeding, this trait serves as a critical marker of commercial quality for cut flower varieties and a tool for classification. Since flower size can vary under the influence of agricultural practices, growing conditions, and plant age, it is always evaluated in conjunction with other characteristics, such as bud shape and growth type.

General information about the subject — on the page Flower diameter.

Sources8

Varieties of Rose mentioned in the description

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.

Ruisteenka

Active

Rosa L. · Rose

Steenks, J. E.|Baarlo, Netherlands

BE DE ES FR IT NL +1
14 records

Tanmirsch

Active

Rosa L. · Rose

Rosen-Tantau Mathias Tantau Nachfolger

AT DE FR IT NL PL
11 records

Ruikuiros

Active

Rosa L. · Rose

KWEKERIJ KUIKEN JAN

BE DE FR NL PL
11 records

Meizogrel

Active

Rosa L. · Rose

MR ALAIN MEILLAND

DE DK FR IT NL SE
10 records

Tanalepin

Active

Rosa L. · Rose

Hans Jurgen Evers

UA
12 records

Schemocba

Active

Rosa L. · Rose

Schreurs, P.

10 records

Tantasch

Active

Rosa L. · Rose

Rosen-Tantau Mathias Tantau Nachfolger

AT DE FR IT NL PL
8 records

Poulamb

Terminated

Rosa L. · Rose

Poulsen Roser Aps (DK)

DE DK FR IT
6 records

Kormodika

Active

Rosa L. · Rose

Wilhelm Kordes,Tim-Hermann Kordes,Margarita Kordes

DE NL
6 records

POULra019

Active

Rosa L. · Rose

Poulsen Roser A/S

6 records

POULra016

Active

Rosa L. · Rose

Poulsen Roser A/S

6 records

Korylal

Active

Rosa L. · Rose

Wilhelm Kordes,Tim-Hermann Kordes,Margarita Kordes

6 records

Jacient

Protection expired

Rosa L. · Rose

William A. Warriner c/o Jackson & Perkins Co

DE FR
5 records

Intertroram

Active

Rosa L. · Rose

HANS JURGEN EVERS (T)

NL
5 records

POULsiv

Active

Rosa L. · Rose

Poulsen Roser AS, DK - 3480 Fredensborg

PL
5 records

Poulpah030

Application submitted

Rosa L. · Rose

Poulsen Roser AS, DK - 3480 Fredensborg

5 records

KORfriedhar

Active

Rosa L. · Rose

Wilhelm Kordes,Tim-Hermann Kordes,Margarita Kordes

5 records

Tandinadi

Protection expired

Rosa L. · Rose

Tantau, Mathias

DK SE
4 records

Pouldrik

Active

Rosa L. · Rose

Poulsen Roser A/S

PL
4 records

Meitongas

Active

Rosa L. · Rose

Alain Antoine Meilland

FR
4 records

Spefunky

Active

Rosa L. · Rose

Spek Rose Breeding International B.V.

4 records

Poulra001

Active

Rosa L. · Rose

Poulsen Roser AS, DK - 3480 Fredensborg

4 records

Poulpal028

Terminated

Rosa L. · Rose

Poulsen Roser AS, DK - 3480 Fredensborg

4 records

Poulcy014

Active

Rosa L. · Rose

Poulsen Roser A/S

5 records