Variety traits

Flower color — Pelargonium grandiflorum

Pelargonium grandiflorum (Andrews) Willd.

Flower color is a defining varietal trait of the regal pelargonium, assessed visually using the RHS scale while taking petal patterns into account. This parameter depends on strict adherence to temperature and light regimes, which influence pigmentation intensity and the sharpness of markings.

In the reference 6 varieties crop Regal pelargonium, where this is mentioned in the description.

For Pelargonium grandiflorum, color assessment is conducted according to UPOV protocols and is considered a qualitative trait. Specialists evaluate the main color separately for the upper and lower petals, using international color charts such as the RHS. The description takes into account the presence of decorative elements, such as contrasting spots, margins, or feathered veins, which are most pronounced on the two upper petals.

The range of colors varies from pure white to deep purple and near-black shades. The intensity of color expression and the sharpness of the pattern depend directly on the microclimate: violations of the light regime or temperature conditions (in particular, neglecting the cold period required to stimulate flowering) can lead to the alteration or loss of the flower's characteristic varietal features.

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

Sources8

Varieties of Regal pelargonium 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.