Characteristics of the zonal geranium
Pelargonium is a plant of South African origin, from the botanical family of Geraniaceae, very widespread in our country and includes about 250 species. The zonal geranium (scientific name: Pelargonium zonale) is so called because of the dark area present in the center of the petals, similar to a spot with shades. The flower can grow on the windowsills and balconies, as long as the place is ventilated and sunny, in fact its presence in the South is more frequent. The plant is bushy and can even exceed one meter in height. It begins to bloom in March-April and continues until the end of October. The leaves are opposite, velvety and lobed. The flowers have 5 petals, 2 of which are erect and 3 curved downwards. The colors vary and range from white to intermediate shades of pink, red and salmon.
Cultivation: exposure and temperature
The plant of zonal geranium it must be kept in an external place, bright and not very humid, and collected at home only in the winter season, in the presence of intense cold. Shading should be used from spring onwards, on very hot days, in order to prevent the leaves from wilting, thus causing irregular growth. During the day, however, the shading will not be continuous but limited to the hottest hours because the excess delays the flowering. In the autumn and winter season, however, you should not shade. The substrate must be well drained, consisting of one part of peat and two parts of earth. At the beginning the temperature will have to be between 16 and 18 degrees. From January, to stimulate the buds, it will have to go down for 8-10 ° C for a month and then return to around 15-16 ° C.