🌿 General Characteristics
The genus Coelogyne comprises about 100 species of orchids native to South Central Asia. The most well-known species, C. cristata, comes from Nepal and China, where it grows at high altitudes in cool climates. It produces fleshy, oval pseudobulbs from which two long, strap-shaped, bright green leaves emerge. 🌸
Already in winter, the flower stem forms at the base of the pseudobulbs and will bloom in spring: an arched inflorescence of 15-20 cm with 3-6 large, showy, pure white flowers, with arched petals and sepals and a three-lobed labellum with golden yellow streaks. A single plant can produce multiple flower stems simultaneously. The other species in the genus always have large, sometimes fragrant flowers, in shades ranging from white to beige, yellow to light green.
☀️ Exposure
Position Coelogyne in a very bright location, away from direct sunlight. During cooler hours of the day and cooler periods of the year, they can tolerate a few hours of direct sun. To encourage good flowering, keep them in a warm environment from March to September. During the cold months, move them to an unheated room or a cold greenhouse, with minimum temperatures around 7-10°C. 🌡️
Environmental humidity should be high, up to 80% during warmer periods.
💧 Watering
From April to September, water abundantly, keeping the substrate consistently slightly moist. During the same period, regularly mist the leaves to increase humidity and lower the temperature on warmer days. During the cold months, reduce watering and only intervene if the pseudobulbs tend to lose turgidity. 💦
Fertilize regularly with a phosphorus-rich fertilizer in spring and autumn to stimulate flowering. ⚗️
🪵 Substrate
Coelogyne roots are thin and delicate: use a fairly fine substrate, composed of small pieces of shredded bark, perlite granules, and plant fiber. A light and well-draining mix is essential for root health. ♻️
🌱 Propagation
Propagation primarily occurs by dividing clumps, but beware: division can cause a long-lasting decline in the plant. Only practice it when necessary, using clean and disinfected tools. ✂️
Coelogyne also propagate by seed, keeping in mind that the new plants may not have the same characteristics as the mother plant.
