D. x delicatum is a lithophyte (growing on rocks). It is variable in habit, which is to be expected as its parents are also variable in habit. The pseudobulbs are 20 to 35 cm long, thickest near the base and tapering towards the apex. There are usually 2 to 5 thick leaves at the top of each pseudobulb, the leaves being 75 to 175 mm long. Flowers occur on 250 mm long stems in clusters of up to 14 or more flowers. They are usually pure white to cream with purple dots on the labellum and are often sweetly scented. Flowers are seen from late winter to spring. D. x delicatum is popular in cultivation and is easy to grow in tropical to temperate climates.
Light: Dendrobium delicatum do best in full sunshine (25000-50000 lux), close to the glass where glasshouse treatment is required. In addition to the natural light, you will have to use artificial light lamps. Dendrobium delicatum care and culture © faatura | CC BY-NC-ND 2.0 Temperature: The average temperature of the summer day is 24-25 ° C, night 20 ° C, giving a daily difference of 4-5 ° C. In winter the average day temperature is 11-14 ° C, night 7-10 ° C, giving a daily difference of 4-5 ° C. Humidity: For most of the year, The Delicate Dendrobium need the humidity of almost 80%, but at the end of winter and at the beginning of spring it drops to around 60%. Too dry air has a negative effect on the development of the plant: its growth is inhibited, and the leaves begin to turn yellow and dry out. The higher temperature, the higher the humidity should be, and the higher the humidity, the more often and longer it is necessary to ventilate the room where the plants are contained, otherwise the probability of rotting and various kinds of fungal diseases. Substrate, growing media and repotting: Dendrobium delicatum grows best in pots with staghorn peat as substrate (crocks and charcoal at the bottom ot the pot). After potting, keep the plant in a cool, shady place for a few days before placing it in its growing position. Do not overpot. Use the smallest pot that will accommodate your plant. It does not need frequent repot, therefore, it is desirable to transplant only when it is really necessary, for example, in cases of strong salinization or compaction of the substrate, at its critically high or low pH (the norm is from 5.5 to 6.5) or when the plant grows very strongly and the pot becomes cramped to it (pseudobulbs begin to hang from the edges of the pot). Repotting is best done immediately after flowering when new roots and new growth begin to grow. Watering: The Delicate Dendrobium will need heavy watering from the commencement of Summer until the first chill spell of Autumn, when watering should practically cease until the new shoots appear in Spring. Watering is directly dependent on the temperature of the content, the higher it is, the more often it needs to be watered. When watering, excess water should flow freely from the pot, since stagnation of water both inside the pot and in its pan can very quickly lead to rotting of the roots and the lower part of the plant. Dendrobium delicatum care and culture © Cattlaelia Forum Orchidée Fertilizer: It is recommended to use a 1/4-1/2 dose of orchid fertilizer weekly. You can use the balanced fertilizer throughout the year or from spring to mid-summer use high-nitrogen fertilizer, and then until the end of autumn high-phosphoric fertilizer to stimulate flowering. Rest period: Dendrobium delicatum need less water in the winter, especially if they grow under the conditions of a dark, short day that occurs at moderate latitudes. They should dry somewhat between waterings, but they should not be dry for a longer period. Frequent morning fogging and rare, economical watering should allow the plant to go through a dry period of rest, while providing it with sufficient humidity. Fertilization should be reduced or eliminated until new growths appear and a more abundant spring watering begins.
day is 24-25 ° C, night 20 ° C
11-14 ° C, night 7-10 ° C
best in full sunshine (25000-50000 lux)