What Are These Black Spots on My Phalaenopsis Orchid Leaves?
The first step in treating the dark spots on your orchid isdiagnosing the problem. Some phalaenopsis have naturally mottled leaves, so it may be natural coloration. However, leaf spotting can also signify a bacterial orfungal disease. The Spruce / Ulyana Verbytska However, keep in mind that black rot is highly contagious and can spread from plant to plant. What Is Black Rot on Orchids? Black rot is a fungal disease that causes root rot....