Dendrobium devonianum is found in the Chinese Himalayas, Bhutan, Burma, Thailand, Laos, Vietnam and the Indian state of Assam. It is a mountain species: it is found in trees at an altitude of 500-2000 meters...
Dendrobium devonianum also called as Devon's Dendrobium, Callista devoniana, Callista moulmeinensis, Dendrobium brevifolium, Dendrobium devonianum var. candidulum, Dendrobium devonianum var. elliottianum, Dendrobium devonianum var. rhodoneurum, Dendrobium moulmeinense, Dendrobium pictum, Dendrobium pulchellum, Dendrobium pulchellum var devonianum, is a species of the genus Dendrobium. This species was described by Paxton in 1840.
IDENTIFY DENDROBIUM DEVONIANUM
Dendrobium devonianum is found in the Chinese Himalayas, Bhutan, Burma, Thailand, Laos, Vietnam and the Indian state of Assam. It is a mountain species: it is found in trees at an altitude of 500-2000 meters.
It is a medium sized, cool to warm growing epiphyte with pendulous, cylindric, slender, slightly fleshy, sub-branched, many noded, 30 - 35 cm stems carrying narrowly ovate-lanceolate, leathery, clasping sheath base, long acuminate, 5 - 7 cm long, 0.8 - 1.2 cm wide leaves.
Devon's Dendrobium blooms in the late winter and spring with an erect to spreading, 30 to 32.5 cm long, 12 to 18 flowered inflorescence with long-lived, fleshy, fragrant flowers arising from the nodes near the apex of leafless, to 1m long, canes. The showy flowers are about 5 cm in diameter. They can be quite variable especially in the amount and length of hairs on the petals and lip.
DENDROBIUM DEVONIANUM CARE AND CULTURE
Cultural information should only be used as a guide, and should be to be adapted to suit you. Your physical location; where you grow your plants, how much time you have to devote to their care, and many other factors, will need to be taken into account. Only then can you decide on the cultural methods that best suit you and your plants.
Light:
Dendrobium devonianum needs a light level of 32000 to 40000 lux. If it is less, this orchid will not bloom. Therefore, artificial lighting systems are indispensable during the winter. The ideal photoperiod is 12-13 hours.
Temperature:
During the growth phase the temperatures must be intermediate-hot: 25-28 ° C during the day and 19-20 ° C at night. When the orchid is at rest, the daytime temperatures should not exceed 20 ° C (better 18-19 ° C) while the nocturnal temperatures should be 15-16 ° C.
Humidity:
If Devon's Dendrobium is grown in pots, the humidity can be around 55-60%. If instead it is a bare root specimen, the minimum humidity value is 70%.
Substrate, growing media and repotting:
Dendrobium devonianum can be potted or on a raft. If you choose the pot, the recommended substrate is the medium-sized pine bark (2-3 cm); on the surface a layer of foam can be placed . If the orchid is grown bare-root, it is important to put a layer of sphagnum under its roots. This guarantees a humidity reserve. When night temperatures exceed 17 ° C, it is very good to keep this orchid outside, in a very bright place, with some hours of direct sun in the morning or afternoon. The orchid will benefit from the thermal changes between day and night that occur outdoors.
Watering:
During the growing period, this orchid gets water abundantly, as soon as the substratum has become almost dry. When the new pseudobulbs have reached maturity, the watering is gradually reduced to bring the orchid into the resting phase.
Fertilizer:
This species is fertilized only during the growing period, using 1/2 of the dose indicated on the bottle of a suitable liquid fertilizer for orchids. The fertilizations take place once every 3-4 watering. The bare-root specimens fertilize once a week, diluting 1/8 of the fertilizer dose in the watering water.
Rest period:
The blooms of the Dendrobium devonianum are stimulated by the rest period and by strong light; they happen in spring. The resting phase begins after the maturation of the young pseudobulbs: it can be autumn or early winter. It is characterized by strong light, lowered temperatures, and the almost absence of water. The watering is carried out once every 20 days or so. In this period the orchid loses the leaves and also most of the roots. If we see that the pseudobulbs have lost a third of their thickness, we need to increase the frequency of the watering a little. This hard period ends with the appearance of new inflorescences / growths, but the watering gradually increases: for now the orchid does not have enough roots to assimilate a lot of water. The production of new growth signals the beginning of the growth phase.
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