Only if you perform any kind of reincarnation.

I was watching it for a while some time ago but never came to a direct conclusion. Over a long period of time it was roughly 5% per day or something like that but I don't know the actual time values as the cost seemed very binary based on total points spent in the tree, total times reset (seemed to be global instead of tree based in some areas and in others it was tree based) and total time spent waiting for it to diminish.

I think the initial cost is 100 plat per point spent in the tree but having some work global and others tree only really messed that up.

It has seemed at times like a complete lack of logic with resetting one tree at a time v. all trees at once.

It's a giant clusterfuck, ofc. Keeps time by waterclock, and each tree & "all" are on separate timers. They each depreciate by different values according to old canonical times like lauds, prime, terce, & vespers. Sext gets auto-filtered, though.