I've got several ponytail palms in large outdoor pots. When the levees broke, it filled my neigborhood with saltwater and the majority of my plants sat in saltwater for almost a month. After my return home, I found the base to be hollow except for a mass of dried white string-like material, and four new shoots at the top of the plant. It seems the base has died and it appears the shoots are not faring well as there is no transport system for food/water. Is there a way to propogate these shoots? Can I cut the top of the ponytail palm off and replant it, hoping a root system will develop? I would appreciate any advice.