Currently beginning the process of building a sleeper flower bed.
The back of it will run against a fence. I’ve read that we’ll need to put gravel in at the bottom for draining but do we need to ‘line’ it as well? If so, does that go at the bottom under the gravel & does it need holes in? I read conflicting advice on this. There will be a few ‘plants/trees’ going in, an acer and palm like tree, it’s a large flower bed! Any advice much appreciated!