Is yellowing on the ends of zz plants a sign of underwatering or overwatering? I water about once a month and make sure to water thoroughly. It does definitely dry out between watering and will be dry for at least a week before I water again. I also saw somewhere that they like to be somewhat root bound and that they’ll focus on root grown to fill their space. When I last repotted it I think I put it it too large of a pot since that is what I had at the time. Could this be affecting my watering issue? Would it be recommended to do a root control to get it to focus on more leaf growth? I have another zz plant that I took from this one that had put out a new stalk since I repotted it. Any suggestions are appreciated!