There are many common orchid diseases that can cause serious harm to your beautiful plant.
You should check your orchids once a week so that you will notice any problems early.
Let's take a look at some of the most common orchid diseases.
Black Rot One of the first common orchid diseases is black rot.
It is caused by fungi that can kill the plant rapidly.
Black rot can cause any part of the plant to become watery and black.
If the disease is only located on the leaf, you can remove it and treat the plant with fungicide.
You should repeat this process until the disease stops spreading.
Petal Blight One of the next common orchid diseases is petal blight.
This condition is also caused by a fungus which will cause the plant's flowers to develop spots.
Petal blight occurs when water is allowed to collect on the surface of the flower.
This disease is treated with fungicide, decreased humidity, and increased air movement.
You should also remove the affected flowers so they don't have a chance to spread the fungus.
Brown Spot Unlike the aforementioned orchid diseases, brown spot is caused by bacteria.
This disease can be caused by cool and wet conditions and is very deadly.
The first sign of brown spot is a watery, brown blister located on a leaf.
The blister will quickly enlarge and affect the whole leaf.
If the disease reaches the crown, your plant will die.
You should remove all infected leaves with sterile cutting tools and treat the plant with Physan 20.