I have had a ZZ Plant (Zamioculcas zamiifolia) for 5 months now. It is located in an East/South Window in the living room. So far, it seemed to be doing quite well, I watered every 2 weeks, nice dark green leaves. About a month ago it started to sprout several new branches that are light green and the tallest is now beginning to unfurl (does this unfurling part take several weeks normally?).
I was very excited originally, but for the last week some of the leaves on older branches in the center of the plant have begun to turn yellow and fall off ....
Is that normal? Or is my ZZ plant actually NOT doing well despite the new growth?
This is my first house plant so I have no experience with it, any input would be greatly appreciated!
Thank you lots in advance,