Dendrobium unicum

During the growing season, these plants like moisture but shouldn't sit in a saturated medium. Overwatering can lead to root rot and ultimately cause the plant to yellow or wilt. To determine when you should water, simply stick your finger in the medium. If it feels wet, wait to water until it has slightly dried out. During the winter months, you can put a few more days in between your regular waterings, but don't let the medium dry out entirely.

Dendrobium orchids like warm climates and prefer a temperature above 60 degrees Fahrenheit at all times. They might be able to withstand slightly cooler nighttime temperatures down to 50 degrees Fahrenheit, but prolonged exposure to cold isn't ideal. Furthermore, they prefer a humidity level between 50% and 70% (with a minimum of 45%). Brown leaf tips can be a sign that the air is too dry for your orchid.

Feed regularly during the growing season with a balanced orchid fertilizer, following label instructions. At the end of the growing season, reduce fertilizer by about half.