Cymbidium Orchid | Black Jack

Lighting
Cymbidium orchids prefer bright, indirect light. Place them near east or west-facing windows, shielding them from direct sunlight. Unlike Phalaenopsis, Cymbidiums can tolerate more light and even benefit from some gentle morning sun. In the UK, they can be moved outdoors during summer months to a partially shaded spot.

Watering
Water Cymbidiums thoroughly when the top inch of the potting mix feels dry, typically every 7-10 days. During active growth in spring and summer, they may need more frequent watering. In winter, reduce watering to weekly or fortnightly. Use rainwater or filtered water if possible, especially in hard water areas. Ensure good drainage and never let the plant sit in water.

Humidity
Maintain humidity levels between 50-70% for Cymbidiums. This can be achieved through regular misting or placing a tray of water near the orchids. They are generally more tolerant of lower humidity than some other orchid varieties.

Temperature
Cymbidiums prefer cooler temperatures than many other orchids. Daytime temperatures should be between 18-24°C, with night temperatures ideally dropping to 10-14°C. They can tolerate winter temperatures as low as 10°C. A clear difference between day and night temperatures, especially in late summer, helps stimulate flower bud formation.

Fertilisation
During the growing season (spring to early autumn), feed Cymbidiums every 2-3 weeks with a balanced orchid fertiliser. In summer and autumn, switch to a high-potassium fertiliser to encourage flowering. Reduce or stop feeding during the winter months. Always use a weaker solution than recommended on the package to avoid over-fertilisation.

Repotting
Repot Cymbidiums every 2-3 years, preferably in late spring after flowering. Use a well-draining orchid mix with bark, perlite, and coconut coir. When repotting, trim any dead or rotten roots and divide large plants if necessary. Choose a pot that allows for 2-3 years of growth, as Cymbidiums prefer to be slightly pot-bound.