Cheshire, United Kingdom
I'm thinking of putting a small raised bed (9' x 9') in my garden for herbs, small vegs/fruits etc. I'm thinking of using old railway sleepers to act as the border. What depth should the side walls be?
Also, if the bed is going to be on top of existing soil is it advisable to line the bed with a membrane to stop weeds/grasses coming through? If so, what about drainage through a plastic membrane? Would the bed become water-logged?
It is advisable to put a layer of hardcore at the bottom of the bed (either with or without a membrane) to assist the drainage? If so, how deep?
- 8 Aug, 2011