PlantPalBrown or black spots on leaves
Check whether the marks are spreading. A dry mark on one leaf and new wet spots need different responses.
What to check first
Look at both sides of the leaf. A dry patch facing a bright window after a move may be scorch. Wet-looking spots that enlarge or appear on more leaves deserve closer attention. Color alone cannot tell you the cause.
What to do now
Photograph the spots and water at soil level. Move a potted plant away from its neighbors if new wet spots are appearing. Leave healthy leaves and hold off on sprays until the cause is clearer.
What to watch next
Compare the same leaf in a few days. If spots spread to new leaves or stems, seek plant-specific advice with a photo of the whole plant and close-ups of both leaf surfaces.