I've just made 2 raised beds from larch that I got from a local saw mill. Its was treated though with dark creosote (smells like). I saw somewhere that I should line the inside of the beds before filling, with plastic bags (saved from compost). What's the general consensus?
I have 2 raised beds, one 2.5m x 1m for veg and the other 2m x 1m (split level) for herbs and maybe some strawberries.