I've been trying to help a friend figure out what these spots are on her umbrella plant (Schefflera) and also what she can do to eliminate them. Any suggestions?
https://www.torontomastergardeners.ca/askagardener/schefflera-black-spots-and-leaf-drop/ See #2: https://gardenforindoor.com/brown-spots-on-schefflera/