Coelogyne lawrenceana occurs in the Himalayas and Vietnam, where it grows epiphytic in trees in primary montane forests at an altitude of 2500 meters above sea level...
Coelogyne lawrenceana also called as Lawrence's Coelogyne, Coelogyne fleuryi, is a species of the genus Coelogyne. This species was described by Robert Allen Rolfe in 1905.
IDENTIFY COELOGYNE LAWRENCEANA ORCHID PLANT
Coelogyne lawrenceana occurs in the Himalayas and Vietnam, where it grows epiphytic in trees in primary montane forests at an altitude of 2500 meters above sea level.
It is a medium sized, cool to warm growing, epiphytic species with ovoid-oblong, 9-12 cm in length and 2-4 cm in width pseudobulbs carrying 2, lanceolate, broad, plicate, 8 nerved, acuminate, gradually narrowing below into the elongate, openly grooved petiolate base, 25-40 cm long and 3-5 cm wide leaves.
Lawrence's Coelogyne blooms in the fall through spring on a 25 cm long, arching, terminal scape arising on a mature pseudobulb with waxy, fragrant, long-lasting, solitary successive opening flowers held just above the leaves. The flowers are brownish-green, fragrant, wide open, about 10-13 cm in diameter, have a dry bract. Upper sepals oval, pointed at tip, measuring 2.5 cm in width, has 9 veins. Lateral sepals oval-lanceolate, at the tips also pointed, measuring 7 cm long and 2 cm wide, each having 7 veins. Petals are elongated, with 3 veins, 7 cm in length and 0.5 cm in width. The lip is triple, white with a red and yellow patch, about 8 cm in length, the lateral parts are straight, with brown veins, and the anterior part round, wavy along the rim, 7-adorned growths from its base and up to the first third. The column is arched, the tip is wider.
COELOGYNE LAWRENCEANA ORCHID PLANT 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:
In the natural habitat, Coelogyne lawrenceana has no contact with the direct sun, but the overall level of illumination is still quite high. It is this point in many respects complicates the care of the plant in the home culture on the ordinary window sill, since where we can create moderate temperatures, as a rule, it is not always enough sun to make the orchid blossom, and vice versa - where it's sunny, it's too hot.
Temperature:
In the natural habitats, throughout the year, the temperature range of maximum 24-27 ° C in the daytime and up to 10-16 ° C at night. The ideal temperature for cultivation at home is in the range from 16 to 26 C °.
Humidity:
The native natural climate of this species is characterized by frequent precipitation, due to which the humidity of the air practically never drops below 70%, and reaches 85-95% at nights. In conditions of high humidity, it is necessary to regularly ventilate the room where the plants are kept, since wet, stale air is an ideal medium for the mass reproduction of various fungal and bacterial diseases.
Substrate, growing media and repotting:
Coelogyne lawrenceana can be grow in pot with very moisture-consuming substrate (for example, pure sphagnum). At the transplant, this plant reacts negatively enough, very quickly takes off even slightly damaged roots, restores for a long time and, as a rule, misses 1-2 flowering, therefore it is desirable to transplant the orchid only when it is really necessary. The best time to transplant is when young shoots reach about 5 cm and begin to grow their own roots independently, this will help the plant to acclimatize faster in a new place and (sometimes) not even bloom.
Watering:
The frequency of irrigation primarily depends on the lighting that affects it. If it is good enough for active growth (new leaves, peduncles, root tips, etc.), then water the plant in order to keep the substrate at least slightly moistened. When an orchid grows, it always needs water, since it participates in virtually all biochemical processes inside the plant. As soon as the intensity of illumination falls, growth slows (or stops), irrigation needs to be reduced, since there is no growth - there is no need for water. Well watered, but not growing orchid will sit for months with wet roots and rhizome and sooner or later it will start to rot. Good drying of the plant in this case will cause harm by an order of magnitude less than waterlogging.
Fertilizer:
During active growth, this type of orchids is fertilized for every third watering in 1/2 of the fertilizer concentration indicated on the package. In addition to the usual root top dressing, it is also recommended to produce a foliar dressing, when a very much diluted fertilizer is sprayed on the outer part of the plant. It is best to feed the orchid, alternating both these methods. The best fertilizer is fertilizer containing nitrogen, phosphorus and potassium in equal parts, for example, NPK = 3-3-3 or 8-8-8. If you do not have such fertilizer, then at the beginning of the growing season (the emergence of new shoots), feed the orchid with a fertilizer with a high content of phosphorus, and immediately after flowering - fertilizer with a higher nitrogen content. To prevent salinization of the substrate, it is recommended to rinse it every 3-6 months.
Rest period:
In the area of the natural growth of Coelogyne lawrenceana there is a seasonal drought period lasting several months. At this time, the amount of precipitated precipitation and the night temperature (up to 10-12 ° C) directly fall, and the air humidity, daytime temperatures and the intensity of illumination do not undergo significant changes. Due to the cooling of the air in the dark time and the large amount of steam in it, there is abundant dew in the mornings, due to which moss, in which the orchid sits, remains moist, not allowing the roots to dry out. In such conditions, the active growth of the plant does not cease, but only a little slows down. To repeat something similar in the conditions of a window sill does not make sense, as directly to flowering of an orchid it in any way does not influence. Refusal of flowering can be caused by extremely hot content, poor lighting or the general stress state of the plant (bad root system).
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