Coelogyne Glandulosa - Characteristics and Care Instructions
The generic name, of Greek origin, is made up of Kolos - empty, without content, and gyne - woman, alluding to the stigma of the flowers, which has a concavity. The specific name, Glandulosa, refers to the fact that the plant has glands. The species was described by Lindley in 1853.
Coelogyne glandulosa is a species of epiphytic or lithophytic orchid that inhabits the mountain forests in southern India, at altitudes between 1000 and 2000 meters above sea level. The plant is small, grows at low temperatures, has oval, striated bulbs.
It blooms in spring , the inflorescence measuring up to 20 cm and having 2-8 flowers along the length of the flower stem. The inflorescence emerges from the newly formed pseudobulbs, and the flowers are white with a yellow mark on the labellum, which is triple and measuring 2 cm long and 2 cm wide. Pseudobulbs are ovoid, curved with age, keeled, basally covered by several coriaceous sheaths, bearing 2 elliptic-oblong to oblong-lanceolate leaves, acute, folded, with 7 - 11 veins, wavy, coriaceous, narrowing towards the base under the shape of a petiole.
In spring, erect flower stalks emerge from the pseudobulbs, approximately 20 cm long, bearing flowers with simultaneous flowering and persistent bracts. The flowers are 2-8 per inflorescence, appearing on new pseudobulbs.
Coelogyne glandulosa loves strong light , but it is not recommended to keep it in direct sunlight.
The optimal temperature during the summer is between 18-20 °C during the day and 10-14 °C at night. In winter, the optimal temperature should be 15 °C during the day and 10 °C at night.
The optimal level of humidity is 60% or more. Too dry air negatively affects the growth and development of the plant. This species is grown in pots or suspended wooden boxes. The substrate must be aerated, therefore, coarse bark will be used, which can be replaced with coarse coconut fiber.
Coelogyne glandulosa reacts negatively to transplanting , so it is only replanted when absolutely necessary. The best time for replanting is immediately after flowering, but not in spring because the plant will not bloom again after that.
Watering is done frequently and abundantly during the growth period. Excess water must be well drained from the pots because its stagnation leads to rotting of the roots and the lower part of the plant. Between waterings, the substrate must be allowed to dry completely.
During the period of new growth, the plant must be fertilized every 3 waterings, with a regular fertilizer, at the concentration indicated by the manufacturer. To stimulate flowering, Coelogyne glandulosa needs a well-defined rest period. In winter, the substrate of the plants must be drier and fertilization stops. The temperature must be 15 °C during the day and 10 °C at night. Watering stops completely or is replaced by a simple spraying of the substrate once every 4-5 weeks. After the appearance of new buds, the rest period ends and the usual watering resumes and the overall temperature will be increased.
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