Dendrobium harveyanum occurs in Myanmar, Thailand, Vietnam and in the Yunnan Province in southwestern China. They grow on the slopes of Doi Suthep in Thailand and near Dalat in Vietnam on tree trunks and large branches at elevations of 1100 to 1700 meters.
Dendrobium harveyanum, also called as Harvey's Dendrobium (named to honor an Irish Orchid Enthusiast), Callista harveyana, is a species of the genus Dendrobium. This species was described by Heinrich Gustav Reichenbach in 1883.
IDENTIFY DENROBIUM HARVEYANUM
Dendrobium harveyanum occurs in Myanmar, Thailand, Vietnam and in the Yunnan Province in southwestern China. They grow on the slopes of Doi Suthep in Thailand and near Dalat in Vietnam on tree trunks and large branches at elevations of 1100 to 1700 meters.
It is a rare, small sized, cool growing epiphyte, which reaching 15-23 cm in height, with erect, spindle-shaped, deeply sulcate, 15-23 cm long stems with 2 to 9, apical, deciduous, ovate-oblong, leathery, 8-10 cm long leaves.
Harvey's Dendrobium blooms in February through April on an pendant, to 6" (15 cm) long, few to several flowered, racemose, lax inflorescence that arises from the nodes near the apex of older leafless canes with 2 to 9, fragrant flowers scented of honey. The flowers are 5 cm in diameter. The flakes of both whorls may be bright red chrome yellow to canary yellow or copper red. Unique inner flakes have long hairs around the edges. The lip is round and densely frayed.
DENROBIUM HARVEYANUM 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 harveyanum needs a light level of 25000 - 35000 lux, and need to ensure bright light and strong air movement. Shading is required from spring to autumn, but the light level should be as high as the plant can tolerate without scalding the leaves.
Temperature:
It is a thermophilic plant. The average temperature of the summer day is 28-30 ° C, night 21 ° C, giving a daily difference of 7-9 ° C. In spring, before the start of the summer rainy season, the average day temperature is 32-33 ° C, night 14-21 ° C, giving a daily difference of 11-18 ° C. The average temperature of the winter day is 26-30 ° C, the night 11 ° C, giving a daily difference of 15-18 ° C.
Humidity:
Harvey's Dendrobium needs the humidity of 78-83% for most of the year, then drops to almost 60% in late winter and early spring.
Substrate, growing media and repotting:
Dendrobium harveyanum can be mounted on cork or tree ferns if we can ensure high humidity and watering at least once a day in the summer. If we grow plants in pots, these should be as small as possible to only accommodate the root ball and any loose, quick-drying substrate can be used as the substrate. Repotting is best done in early spring, when new roots begin to grow.
Watering:
Precipitation is moderate to heavy from the end of spring until the beginning of autumn, but in winter conditions are very dry. Dendrobium harveyanum should be kept moist during active growth, but when new growths mature in autumn, the amount of water should be gradually reduced.
Fertilizer:
Dendrobium harveyanum should be fertilized every week 1/2 - 1/4 of the recommended dose of fertilizer for orchids. It is preferable to use high nitrogen fertilizer from spring to mid-summer, and in the late summer and autumn period use of highly phosphoric fertilizer.
Rest period:
A cool, dry rest is necessary for Dendrobium harveyanum and should last until new growths appear in the spring. You can completely eliminating water in winter, but the plants are healthier if they dry between watering in winter, but they will not be completely dry for too long. However, during the last 1-2 months of winter, the plants must dry out completely between waterings and stay dry for a bit longer. Occasional morning fogging will protect the plants of drying. Fertilization should be reduced or eliminated until regular watering starts.
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