Variety traits
Saintpaulia ionantha H. Wendl.
For Saintpaulia, the key size parameter is the diameter of the leaf rosette rather than the vertical stem height. Plant dimensions are classified by rosette diameter from microminiature to large, which determines pot size requirements and the diagnostics of cultivation conditions.
In the reference 4 varieties crop African violet, where this is mentioned in the description.
In Saintpaulia, the concept of height is secondary due to the shortened stem; therefore, in breeding and classification, the primary criterion for size is the diameter of the leaf rosette. Varieties are divided into groups: microminiature (less than 6 cm), miniature (up to 15 cm), semiminiature (up to 20 cm), standard (20–40 cm), and large (40–60 cm).
The rosette size trait determines agrotechnical requirements, in particular, the correspondence to the pot diameter, which should be approximately one-third of the plant's width. An imbalance between the rosette dimensions and the substrate volume negatively affects flowering, and atypical vertical stretching serves as an indicator of etiolation or a violation of lighting conditions.
General information about the subject — on the page Plant height.
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.