Q: My pothos seems to be healthy, with lots of new growth near pot and on ends. It’s growing very rapidly. But leaves are spotting in the middle.

This is not an exterior window. Why only the middle ? You can see that the pot waters from the bottom. Any ideas ?

A: The distance between leaves tells me that the plant isn’t getting quite the amount of light it would like. Typically there should be about an inch between individual leaves on a stem. The plant can grow in low light but the leaves will be thin and unable to easily fight off diseases. The spots are typical of some sort of fungal disease. Your office atmosphere is reasonably sterile so I’d simply cut off the affected leaves before they infect others.