Ive been away for a while and farming is now around. I also found out that building your own house is possible. So how does it work? Youre able to grow like 20 Yew trees at your house and then you can cut them down, and have them respawn and make millions of dollars or what?

The house trees are only decorative.

trees grown in your house are un-cuttable unfortunately.

You still get farming exp for planting trees in your house. Not sure how much exp, but I know you do. :)

Yes, you could plant your own yew trees and cut them down (with the farming skill).

 

 

 

However, this is not very suitable for cutting large amounts of yews, where you'll want multiple trees at one spot ( to be able to keep on cutting them, not waiting fr them to respawn). Exception could be a magic tree in the gnome sttronghold. There, you can cut the nearby yews/magic trees to wait while your own tree repawns.

 

 

 

Note, you need quite a high farming level to be able ot plant high level trees such as yews or magics. Since farming can be time consuming/costly, and seeds are scarce/expensive, it is not something you will achieve very fast if you have to start from ground level.