Lichen

Question

What to do for lichen on gardenia bush – causing deformed leaves.

Answer 1

Lichen normally does not cause any problems for plants, other than making them somewhat unattractive. For more info on lichen, and how to get rid of it, try this article: https://www.gardeningknowhow.com/ornamental/fungus-lichen/treatment-tree-lichen.htm