ZZ Plant

Question

The ZZ plant has developed dark round markings on the stem as it has become more mature. Is this normal?

Answer 1

It is possible that some markings are normal, but if they are dark and spreading, I would say it could be fungal in nature. Here is an article that will give you more information: https://www.gardeningknowhow.com/plant-problems/disease/treating-root-rot-gardening-tips-for-housplants.htm