depending on your grow zone, atmospheric humidity and the temperature in your environment.... Potted plants like yours, should be allowed to completely dry out after watering. In a well-drained medium, this should take no more than a day or two....
observe the bulbs....it is wrinkled and dehydrated....check the roots as to why it is not absorbing nutrients for the plant; or maybe you need to water this plant more often than you are doing now....the black spot with yellow ring around is sign of fungus
I suggest you go to:
First Rays' Home Remedies
try home remedies first before you buy the 'big gun' chemicals....
Diseased dendrobium aggregatum
Linear Mode
