Answer: Your ZZ plant is an easy low-light, low-water houseplant. The rippled stalks indicate that the cultural conditions aren't quite right or that you are overwatering or have overfertilized. I'd allow the soil to dry out between waterings and keep the plant out of bright light. It should settle down and grow well for you if you. These plants seem to thrive on neglect so try not to give it too much TLC.
Best wishes with your Zamioculcas!
Q&A Library Searching Tips