I read that the 'sapling' path for the Blessings of Nature quest in Whiterun still results in the tree appearing bugged, so I decided to take the sap path.

But the Gildergreen tree still looks the same as it did before starting the quest. How long (in an exact amount of days in-game) does it take for it to look like http://elderscrolls.wikia.com/wiki/Gildergreen?

Please don't say 'just give it time;' I'd like to know an exact amount or as close an estimate as possible. And thank you :]

...Or is even the sap path bugged?