Kalanchoe is a genus with about 125 species of the family Crasulaceae, native of the Old World although a few have been introduced in the New World and grow in the wild.
Most are perennial shrubs or herbaceous plants, with a few annual or biennials. The largest Kalanchoe beharensis , from Madagascar, can reach 6 m in height, however most do not exceed 1 m.
They have fleshy leaves, medium to dark green
The members of the genus are characterized by opening their flowers by growing new cells on the inner surface of the petals to force them out and on the outside to close them. p> They appear in floral stems forming large umbels of pink, red, purple, yellow or white, depending on the species or variety. It blooms from early winter through spring.
The genus Bryophyllum , described by Salisb. in 1806, and Kitchingia created by Baker in 1881, are considered synonymous by Kalanchoe, although some scientists disagree and treat Bryophyllum as a separate genus.
Cultivation and Uses 
They are often used as indoor plants or rock garden and have become popular because of its easy propagation, low water requirements and the wide variety of floral colors. The section Bryophyllum - formerly classified as an independent genus - contains species such as Kalanchoe pinnata i>. In these plants, the new specimens develop vegetatively as seedlings in small natural incisions along the edge of the leaves, which, when detaching from the mother roots.
The fertilizer must be bi-weekly from April to September, depending on the region or latitude in which it is grown.
You need a bright, warm and airy environment. Sunlight should not be too strong. It supports dry heating environments well. The winter temperature should be 15 to 18 ° C. They can not withstand frost or cold temperatures. To force the flowering the following season should be restricted to 8 or 10 hours a day for about 3 weeks, this is usually done in summer.
Multiplication of Kalanchoe is done by cuttings in spring with a temperature of 20 ° C, should also be transplanted in spring, after flowering.
to cause branching.
Prefers a well-drained calcareous and volcanic soil soil. Put some peat in autumn to cover and protect from the cold.