Wood to use for raised veg beds
I want to build some raised beds in my garden for veg growing and have been looking to source wood e.g. seeing sites selling scaffolding boards made from <span style="font-size: x-small;">European Whitewood. But, I'm also seing suppliers selling Tanalith E treated wood to add protection. I'd rather not use wood that's been chemically treated however, won't untreated wood just start to slowly rot once it comes in to contact with damp conditions? I see maybe untreated oak sleepers as an alternative but they are very expensive even if they are supposed to last 20 years.
Any help welcome, thanks.