Poinsettia plant height is a key commercial parameter measured from the substrate level to the top of the inflorescences. In commercial production, this trait is actively regulated to maintain a compact plant habit.
In the reference
98
varieties
crop Poinsettia,
where this is mentioned in the description.
For poinsettias, plant height is measured in centimeters from the surface of the substrate to the highest point of the cyathia or bracts. In the wild, this species is a shrub reaching between 0.6 and 4 meters in height, whereas modern potted cultivars are selectively bred to range from 30 to 80 cm.
Plant height is a manageable trait that depends on light intensity, temperature regime, and day length. To achieve commercial compactness, agronomists use shoot pinching and modification of growing conditions, as height determines the planting density in greenhouses.
General information about the subject — on the page
Plant height.
Varieties of Poinsettia 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.