Phalaenopsis flower diameter

In variety trials, flower diameter is recorded as the width of the flower viewed from the front. Measurements are taken on mature plants, and a sample of 20 specimens is typically required to analyze the characteristic traits of a cultivar. This indicator is a genetically fixed varietal trait, although its actual expression during the flowering cycle depends on growing conditions, the general health of the plant, and the quality of agronomic practices.

In breeding practice, Phalaenopsis are classified into mini-forms with a flower diameter of up to 5 cm, standard large-flowered hybrids with a size ranging from 8 to 12 cm, as well as intermediate forms. This trait serves as a key descriptor for DUS tests, allowing for cultivar identification and the differentiation of market segments. It is important to note that the size of the planting container does not directly determine the flower size of a mature plant.