Raised bed - rubble and topsoil mix?
I hoped someone could help me ou with a truly novice question on my new flower beds. I've got the handy-man to make me a 2 sleeper high raised bed all the way along my neighbours fence. This is the first thing we've done in the garden so are complete novices, but looking forward to buying our first plant ever!
I've got my pond liner to go along the fence side, and now i'm wondering what the heck i put in there before the plants ? The beds are 20m long so if i put only topsoil in there i'll be bankrupt, and i guess that wont be good for drainage? The handy man reckoned i needed Type 1 rubble, and then topsoil but couldn't tell me how much of each.
If i fill them half (1-sleeper deep) in Type 1, and then half (1-sleeper deep) with topsoil will this do the job?
Thanks in advance for your help