I have a 23 year old jade plant. Up on a top branch she has a white root sprouting out. I read that it is likely for support like a vine. Do I need to use a dowel rod and give her support? It is not hanging or overly heavy. Looking for advice as to what to do with her.
There is no need for you to do anything. Jade Plants do occasionally put out aerial roots. They are not a problem and it does not mean the plant is looking for or needing anything. If you were to provide a support, the root would not attach itself anyway. Personally, I think that plants that are propped up artificially look unsightly. A plant that needs propping is a plant that really needs pruning.