Genus of forty species of epiphytic and terrestrial orchids, originating in central and southern Asia and Australia, there are many hybrids of Cymbidium on the market, with flowers with showy colors. They produce numerous flattened pseudobulbs, linked together by short fleshy rhizomes; each year the plants produce new pseudobulbs, each of them bears a dozen long rigid, ribbon-like, slightly arched, bright green leaves, which can reach 90-100 cm in length. In spring, at the base of the pseudobulbs, a long erect, fleshy stem develops, which bears up to 15-20 large fleshy, white, yellow or pinkish flowers. There are many hybrids on the market, even with small or very large flowers. The flower is generally pale, pastel in color, and has a conspicuously speckled labellum; they remain in bloom for weeks, for this reason they are among the most widespread orchids as cut flowers.
The most common Cymbidium on the market are of Asian origin, and come from the mountainous areas of Central Asia; therefore they love places not too hot, with summer temperatures below 30 ° C, and cool winters; they do not fear short frosts, even if they are usually grown in the apartment or in a cold greenhouse during the winter. To encourage flowering, it is good to grow the plants outdoors, in a cool place, until the first cold winters arrive, so we bring the plant indoors or place it in a place sheltered from frost. Remember to grow in a position that is not excessively sunny, but well-lit and well-ventilated.
Cymbidium particularly love sunny exposures, which favor abundant blooms. Too high temperatures can, however, especially in summer, cause discoloration of the leaves and sometimes burns. Full sun is therefore recommended in the middle seasons and sun only in the morning from June to September.