Orchid Dendrobium (Latin Dendrobium) is a representative of one of the most extensive genera of the Orchid family. In nature, it grows mainly as an epiphyte (airy orchid), which confirms its name Dendrobium, from the Greek. Tree dweller.
Some species grow on rocks (lithophytes) or on the ground. The genus of dendrobiums has up to 1200 species; it is found in the Himalayas, Vietnam, China, Indonesia.
The orchid is small, from 40 to 90 cm, the stem consists of cylindrical pseudobulbs. The leaves are lanceolate (5-10 cm), arranged alternately on the stem. From the axils of the leaves, peduncles grow, which contain 1-4 fragrant flowers, 6-8 cm in diameter. The colors are very diverse: white, yellow, orange, lilac, two and three colors.
Dendrobium hybrids have been bred as indoor plants, the most common of which is Dendrobium nobile or Dendrobium nobile. In popularity among indoor orchids, dendrobiums are second only to phalaenopsis.
You can buy Dendrobium Nobile in our store
Other names for Dendrobium nobile are Callista nobilis, Dendrobium coerulescens, Dendrobium formosanum, and Dendrobium lindleyanum.
Popular types of dendrobiums:
Dendrobium phalaenopsis (Dendrobium phalaenopsis) is an orchid with large flowers up to 9 cm in diameter. Color: from lilac to lilac. Blooms in winter for 5-6 weeks. Homeland: Australia, New Guinea.
Dendrobium densiflorum is an orchid with many rounded fragrant flowers of white, orange or yellow color, collected in a brush. The clusters are similar to bunches of grapes and contain 50-80 flowers with a diameter of 3-5 cm. It blooms in spring.
Dendrobium beautiful (Dendrobium bellatulum) is a small orchid from Southeast Asia. Distinguishing feature: the only orchid growing in nature on conifers. The flowers are white, yellow, 2-3 cm in diameter, with a wonderful aroma.
Dendrobium is a fairly unpretentious orchid and caring for it will not be difficult. Loves a lot of light and high humidity. The peculiarity of the temperature regime: the night temperature should be 5-7 degrees lower than the daytime. The second feature is that for winter flowering, dendrobium needs a dormant period from early November to late December.
Lighting. The very light-loving dendrobium orchid prefers east, southeast and southwest windows. Due to the fact that the plant does not tolerate temperatures above 27 ° C, it can be left on the southern window only in the autumn-winter period. If dendrobium is contained in the northern window, then in autumn and winter it needs additional additional lighting with lamps (4 hours a day).
Dendrobium leaves can be used to determine if it is receiving enough light. With sufficient light, they are green, with excessive light, they become light green and burns may appear on them. With a lack of light - the leaves are dark green, with an acute shortage - yellow.
Temperature. Dendrobium prefers moderate temperatures. During the period of active growth, it is desirable to maintain the daytime temperature in the region of 20-26 ° C, at night - 15-20 ° C. During this time, the orchid will benefit from being outdoors - on a non-glazed balcony, veranda, or garden. The natural daily temperature difference is necessary for active development, the laying of flower buds and lush flowering in winter.
In the autumn-winter period, when growth ends, the daytime temperature of the content should be reduced to 12-17 ° C, nighttime to 10-13 ° C. At the same time, provide the orchid with intense light (south window + additional lighting) and reduce watering. Only if these conditions are met, dendrobium will bloom well.
If the temperature is too high (above 33 ° C), the roots of dendrobim cease to absorb water, at the same time, the leaves evaporate and the plant may dry out.
Air humidity. Dendrobium comes from tropical forests with high humidity reaching 55-60%. Therefore, it is desirable to create conditions for him that are close to natural. If the indoor air is dry, the orchids are sprayed with soft water daily or every two days. You can also place expanded clay in a pallet near the orchid and moisten it regularly. Or put a little damp sphagnum moss in the orchid planter.
At high temperatures and insufficient humidity, young dendrobium leaves will be crooked or wrinkled. In this case, appropriate measures must be taken.
Watering. In the spring and summer, during the growing season, orchids are watered once every 3-4 days, in the fall - once a week. In winter, if the dendrobium is at rest, watering is very careful - once a month.
Before the next watering, the roots and substrate must be dry. The pot with the orchid is placed in a container of warm water for 10-15 minutes. Take out, the water should drain completely, and place in a planter or on a block.
Important: When watering, try to keep the young bulbs from getting water. Water can cause them to rot.
Top dressing. They feed the dendrobium orchid during the growth period, i.e. from April to September, 2-4 times a month. Fertilizer can be added to water used for irrigation.
For feeding, Kemira Lux, a special fertilizer for orchids, or a complex mineral fertilizer are suitable. In the latter case, the concentration should be 2-3 times less than indicated on the package.
Transfer. Dendrobiums, like other types of orchids, do not need frequent transplantation. Usually the plant is planted in the spring, after flowering, when the orchid grows and no more than once every 2-3 years. The need for a transplant arises if the roots of the dendrobium do not fit in the pot or are sick, the substrate is caked and oxidized. For the substrate, store-bought soil for orchids is suitable, which includes bark, foam balls, moss. Sphagnum moss is needed to increase moisture near the plant, foam plastic - so that the substrate does not cake.
Important: The roots of the dendrobium are fragile; when transplanting, proceed carefully.
Pots are usually taken opaque, sometimes drainage from large pieces of bark is placed on the bottom, and sphagnum moss on top for additional moisture. You can water the orchid 7-10 days after transplanting.
Trimming and shaping. Dendrobium does not need shaping.
Bloom. Usually occurs in the winter-spring period, from January to April. Before flowering, dendrobium goes through a full development cycle, including a period of active growth and a period of rest. If the dendrobium does not receive legal rest in the fall, then instead of flowers it will release children - young shoots from a pseudobulb that should bloom.
The color of the flowers of the dendribium is very diverse: lilac with a yellow center, lilac, white with pink tips, crimson or just white. Dendrobium blooms with fragrant flowers from 2 to 4 weeks.
Before flowering, watering is reduced, the plant is taken out to the brightest place, artificial lighting is applied. If flowers did not appear in January, you can stimulate the dendrobium with a fertilizer containing phosphorus. Or take a shower 2-3 times with a water temperature of 30-35 ° C, maximum 40 ° C.
After flowering, the leaves turn yellow and fall off (not all), the plant prepares for a new cycle.
Reproduction. There are two common ways of reproduction of Dendrobium orchids: by dividing the bush and by "kids".
Babies are small dendrobiums in the form of shoots on the stem, which sometimes give birth to pseudobulbs after (or instead of) flowering. When the length of the offshoots reaches 4-5 cm, and the length of their roots is 3-4 cm, the children are separated (cut with a knife) from the mother plant with a piece of stem and planted in a prepared substrate.
As a substrate, you can take ordinary soil for orchids of the smallest fraction or chop the bark into small pieces yourself. Soak the soil in water for a day so that the roots of the children are not injured. For the same purpose, it is advisable to hold the roots of the children for 10 minutes in warm water before planting.
After the children are planted one by one or 2-3 in small pots, the soil around the plants is pressed with fingers.
When propagating by dividing the bush, you need to make sure that each delenka has at least 2-3 adult pseudobulbs and parts of the roots.
Diseases and pests. Most often, dendrobium is affected by spider mites, aphids or thrips. It is necessary to increase the humidity near the plant, wash it every two weeks with soapy water. Remove parasites, in case of severe damage - treat the leaves with actellik.
Dendrobium in winter. Before winter-spring flowering, the dendrobium rests. His rest period begins in November and lasts 2 months.
At the end of October, watering is stopped, the orchid is transferred to a bright, dry and cooler place. It is advisable to maintain the temperature of the content around 15-16 ° C during the day and 8-10 ° C at night. If it is not possible to arrange a daily temperature difference, then a constant temperature within 10-12 ° C is suitable for dendrobium. Dendrobium may not bloom at higher temperatures or humidity.