The genus sinningia includes dozens of species of flowering plants of tropical origin, widespread in nature in Central and South America; Sinningia speciosa is the botanical species from which the large-flowered hybrids grown throughout the world have been obtained, it is native to Brazil. It is a medium-sized tuberose, with deciduous leaves, also called Glossinia; every single tuber produces a small dense and roundish shrub, made up of large velvety leaves, rough, slightly fleshy, light green, with showy veins in relief; the underside of the foliage is reddish or rosy. During the spring months, and often also in autumn, thin stems are raised between the leaves of the Glossinia that carry small trumpet-shaped flowers, blue or purple. There are numerous hybrids, characterized by very large flowers, white in the outer part of the cup, but of a very showy color in the inner part, in shades of red, purple and lilac; the petals are spent and velvety. During the cold or very dry months the gloxinias go into vegetative rest, losing all the aerial part.
These tuberous plants prefer fresh, moist, very soft and rich soils; in general, universal soil is used, mixed with a small amount of sand and small pieces of shredded bark: in this way we will obtain a substrate that hardly causes stagnant water, but at the same time remains fresh.Multiplication
It generally occurs by division of the rhizomes or by leaf cuttings; It is also possible to try to sow the sinning, but it is good to get the seeds from specialized traders because often the seeds of Sinningia they are sterile, or plants that are not identical to the mother plant are likely.
Glossinia, Sinningia - Sinningia speciosa: Pests and diseases
The key word to best treat gloxinie is watering: an excess of water easily causes the tubers to rot, a shortage of water brings the plant to vegetative rest very quickly. Sometimes they are attacked by mites or rust.