I may go with the 6x2 but I thought sleepers would last longer and be more of a feature, also I think I have seen untreated sleepers for sale....
I've never heard of hemlock as a wood, so probably not available here.
Just a little point, I'm not in England, I'm in wales.
I know the price of sleepers but myself and my wife have bad backs and also a dog that likes to eat plants.
I am new to gardening, I am going to build some raised beds, probably out of sleepers, that are going to be about 3 foot high, my question is...
Separate names with a comma.