Hello, we have a ponytail palm at work that is over 40 years old, it was given to one of our Doctors when he started practicing! It is about 4 ft tall and the base is 2ft. The previous person neglected the tree and we are trying to get it back. We believe it was not watered for a long period, I have watered it weekly for about 4 weeks. But we also know it does not need a lot of water! You can see she used tap water and it did stain the base of the tree. I have been using distilled since that is what is in our water cooler. It still has a lot of green on it!! But is still turning brown! It does get a good amount of sun! At this point repotting is not an option!!! Thank you so much for your help!!