Identifying a Suspicious Leaf Spot on Phalaenopsis

Is That Spot Bacterial? What to Do

A Phalaenopsis has a small, indented, pale green spot with darker edge and tiny internal spots on the bottom leaf. The plant is otherwise healthy, blooming, on a humidity tray, east/southeast exposure, 68–70°F.

Likely Bacterial Infection

The description matches bacterial infection. Watch for enlargement or spread. If it grows, remove the leaf with a sterile tool (use a new blade for each cut). Do not reuse cutters. Flower size variation may indicate root issues; check leaf firmness. If leaves are limp, inspect roots after blooming.