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Due to the fact that the Dendrobrium Orchids are vast, they are divided into six groups to understand their most appropriate cultivation techniques.First group: Dendrobrium belong to this group that need a period of vegetative rest and deciduous leaves such as the Dendrodrium Nobile.This group of orchids loses its leaves during the winter. During this period, as there is not the ideal temperature for the plant to grow it is in vegetative rest, saving its reserves. Once the heat and rain are back, the flowering and seed production begins.To successfully cultivate these Dendrodrium, therefore, the typical warmth of spring and summer, constant humidity, fertilization and not too strong light is necessary. During the cold period it is necessary not to fertilize the plants and expose them to a lot of light until the flowering that will be in early spring.Second group: The species belonging to this second group are very similar to those of the first group with the only exception that the temperature at which they must remain exposed is constant throughout the year. An example of this species is Denbrodium aggregatum.Third group: The ever-green Dendrobrium are part of this group who do not need vegetative rest but nevertheless need to get used to the passing of the season. An example may be the Dendrobrium fimbriatum.These plants should never remain dry all year round, perhaps watering should be reduced in autumn and winter and placed in a cool place. In the summer they need to stay in a warmer and brighter place to start flowering.Fourth group: the Dendrobrium always belong to the fourth group and always need a short vegetative rest, such as the Dendrobrium formosum. They are plants that do not tolerate too high temperatures or even those that are too low and the expected rest period is around three weeks, during which the watering will be scarce and the fertilizations absent.Fifth group: this category includes the evergreen Dendrobrium that do not need vegetative rest but do not like extreme climatic conditions, ie they do not bear high temperatures and humidity.An example is Dendrobrium taurinum; this type of plant needs abundant light and ventilation and watering must be regular during all seasons.Sixth group: this group includes the best known and most widespread orchids such as the Dendrobrium phalaenopsis; they do not go into vegetative rest and always need to be watered in every season of the year. Originally, they come from very hot countries therefore they are hot greenhouse plants.General dendrobium orchids treatment
It is good practice to water these plants in the morning so that at night the leaves have dried and it is necessary not to leave stagnant water to avoid the onset of diseases. To ensure that the plant maintains a quantity of moisture that can benefit it, it is possible to place a saucer underneath the plant with expanded clay or gravel and some water. Water will evaporate ensuring a moist environment and the plant's roots will not touch the water. It would be important for an orchid that has to live in an apartment that the radiators present have a humidifier. The ideal fertilizer for Orchids is the one that dissolves in the water to be used for irrigation, it would probably be to avoid tap water. Make sure the vase in which the orchid is placed has some drainage holes and is not too large. In operations carried out on the orchid such as cleaning or invasion, use gloves to prevent the spread of pests or diseases on the plant.
Olaf Swartz invented the name Dendrobrium as far back as 1799 and contains only 19 species belonging to this type of orchid, later it was the Japanese Jiro Yamamoto who expanded the number of species belonging to this genus, giving rise to numerous hybrids.
The Dendrobrium phalenopsis or Cooktown Orchid is the Austrial floral emblem so much that it was inserted in 1968 as an image of the 25 cents stamp and in the one of 1.20 dollars.