Yes, fluoride can be a problem for Dracaena plants and others in the Lily family, including Spider Plants. The confusion is that most people who have fluoride added to their water supply assume that this will affect their plants. The Public Health Service recommends a fluoride level of 0.7 ppm concentration in drinking water. That is substantially below the 1.0 ppm concentration that will cause damage to fluoride sensitive plants. Some areas do have naturally high levels of fluoride in their local water, but that is the exception. Few of us need to be concerned abut fluoridated water damaging our plants.
