Water-soaked black and brown spots on plant leaves and stems often indicate a fungal or bacterial disease is the problem.

Brown spots on fiddle leaf fig leaves aren’t always a sign of a problem. Sometimes, the leaves have just lived out their natural life span and are dying to make way for new leaves.

Q: Most years, my hawthorn tree gets lots of brown patches on the leaves. It always seems to grow normally, though, so I wonder if this is a disease I need to worry about?

5. Low Humidity. Light brown spots scattered across fiddle leaf fig leaves can be caused by dry air. If the brown spots in question have a pox-like look instead of being in a single area of the ...