I'm just starting a raised bed in the backyard and I'd like some advice on soil mixture. I already read all the downsides about raised beds, but we have chewing/trampling dogs in our backyard, and it's honestly the only way to make a go of it. That said, can someone help me with the right soil mixture? The raised bed is 8x4 and about 30" off the ground, made of hardwood. Should I get 1/2 fill dirt and 1/2 compost? And if so, what kind of compost do you recommend? I obviously want something organic, and I'm NOT a fan of anything made by Monsanto. I saw something called Gro-Well Organic Garden Compost - does anyone know anything about this? Any other recommendations? I'm also looking for organic alfalfa hay and haven't found that yet for mulch. Thank you.