I'm planning to build raised beds later this summer or fall, fill them with soily manury goodness and let them percolate over the winter so they're ready for next spring and the rest of our lives.
So now I'm in the planning stages, how big, how deep, how to make the corners, what wood to use, etc, etc. My soil is rocky, and yukky (yukky meaning no topsoil), so I was thinking of making the beds high enough that they don't need to use my dirt. In fact, I was going to cover a few rocks with these babies.
First question - how high do the beds need to be? Do they have to be 18 inches, or is 12 inches good enough?
I was going to use treated 2 x 6s, either 2 or 3 high. I'm aware of the debate over using treated wood, but that just doesn't bother me. I am spending way too much time thinking about the corners though. There are a few places selling corner hardware with integral stakes and other fancy stuff, but the $$ adds up quickly. Should I just use angle brackets from Home Depot, or some other home-brewed system? (One person writes in gardenweb that she used stakes for the sides and no corners at all, for drainage.) Oh, the confusion....
Last question: So far I've planned 3 beds of 4 x 12. I feel like I should have some 4 x 4 beds for asparagus and strawberries too. Does that make sense? It's only me that I'm planning for here. If I get lucky maybe there'll be a Mr Right someday, but I don't want to kill myself with these beds.
PS - cold frames are a planned future addition to at least one of these beds. I suppose that should be part of the initial planning too.