They are very pretty but really didn't seem to keep the flowers all that hydrated. I ordered quite a few so it might take a little more experimenting. Their "instructions" are vague which may be part of the problem. The price was right so I'll continue to tweak and see if I can make them work.
Crystal soil is biodegradable and non-toxic. It's odorless and a decorative substitute for soil. For use indoors with all types of plants. Will need to be re-wetted after a couple of weeks. Will last up to a year with nutrients before it needs to be replaced.