Patchy discoloration on pleurothallis

[Pattywack]

Originally Posted by Roberta

I have seen algae on leaves of plants from Andy's Orchids on occasion... where they grow it is REALLY humid. Doesn't seem to harm the plants, they grow in that environment very, very well.

Roberta, does this look like algae to you as well? I have not been very successful in removing it from leaves, usually the plant is so small I’m afraid to damage it. Larger leaves are easier though I’ve only tried using water, nothing more. If it wipes off green, it’s definately algae.