Posted: 24/11/2011 at 15:29
Jangra - I'd use untreated timber. It will last for a long time anyway, and you can always replace it when it does rot. Treated timber is treated with chemicals and that's going against the very spirit of growing your own. That said, there are treatments which are certified as being okay, but I'd just go to my local builder's merchants or sawmill and get the cheapest timber I could, so long as it was high enough and thick enough and bring it home and make my own.