Variety traits

Plant Height — Petunia × hybrida

Petunia x atkinsiana D. Don

A morphological trait that defines the habit and classification of petunia cultivars. It is measured during the peak flowering phase and serves as a criterion for selecting cultivation practices and landscape applications.

In the reference 9 varieties crop Garden petunia, where this is mentioned in the description.

For Petunia × hybrida, plant height is classified into low (up to 20–25 cm), medium (25–50 cm), and high (60–75 cm or more) forms. In variety testing protocols, measurements are taken using a ruler during the peak flowering phase on several plants within a plot; for trailing (ampelous) cultivars, shoot length is a more indicative parameter.

This trait determines the selection of planting sites: compact cultivars are preferred for borders and containers, whereas tall hybrids, such as the Grandiflora group, require wind-protected locations due to their increased sensitivity to precipitation. In limited soil volumes, plant height directly affects ornamental value, necessitating growth control to prevent excessive shoot elongation.

General information about the subject — on the page Plant height.

Sources8

Varieties of Garden petunia 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.