General Care Guidelines:
Light: Provide bright, indirect light, such as that from an east or west-facing window. Protect them from harsh, direct midday sun, which can scorch the leaves. The leaves should be a bright, yellow-green color; dark green indicates too little light, while reddish-green or burnt tips suggest too much light.
Watering: Water thoroughly when the potting medium is nearly dry to the touch. They store water in their pseudobulbs (the fleshy swellings at the base of the leaves), so they can tolerate drying out slightly between waterings, but should not be left sitting in water, which can lead to rot.
Potting Medium: Use a well-draining, chunky orchid mix, such as one made of bark, charcoal, and perlite, to ensure excellent air circulation around the roots.
Temperature: They thrive in moderate to warm temperatures, ideally between 18°C-27°C (65-80°F) during the day and slightly cooler at night.
Humidity: Maintain moderate humidity levels, ideally between 40% and 60%. You can increase humidity by placing the pot on a tray of damp gravel or using a humidifier.
Fertilizer: Feed regularly during the active growing season (spring and summer) with a balanced orchid fertilizer, such as a 30-10-10 formulation for bark-based media, diluted to a quarter or half strength.