"Spanish cedar (Cedrela odorata) or Central American cedar is a very commonly grown wood that makes beautiful furniture. There are actually 30 distinct species of Cedrela growing in Costa Rica. The locals can identify most of them; we generally are happy to be able to tell that it is cedar.Spanish Cedar is a deciduous Tree, not an Evergreen like regular cedar. No relationship. Spanish Cedar is grown in Central America, and they have just been hit with a large tax, so it is about to become very expensive. But it will give up humidity to counter the effect of opening your humidor, and soak up excess when that is what is called for. Nothing like n it, no replacement for it. I have heard Mahogany, but have not had confirmed to me that it is the same, or as good as the real thing.
Stick with a winner, a known Good Thing, time tested and unique. Have you tried any of the replacements for cork in Wine bottles?
Spanish cedar is of the same family as mahogany "