One possible reason for brown spots on Schefflera leaves is a fungal disease called Cercospora leaf spot.

8 Causes of Brown Spots on Schefflera Leaves (And Solutions)

Schefflera, or umbrella plants, are popular houseplants because they are easy to care for. However, brown spots on the leaves are a common problem. There are a few different reasons why this may happen, and fortunately, there are solutions for each one. Here are 8 causes of brown spots on Schefflera leaves, and what you can do to fix the problem.