I decided not to go with the Yellow Bag soil. Turns out I really didn't need quite that much soil plus I'm far too impatient. I got some sphagnum moss and raised bed soil in bags today and it's a little more than half full. After it settles over the next week, 'll just add more.

Now how to keep the weeds out for another month and a half!

For filling raised beds that have an "open bottem" I use the bagged topsoil, which is a nice sandy loam. I also add compost and manure. Keep in mind now that the beds I built were only 5'Lx2'Wx10"H. Much bigger than that and buying dirt by the 1cuft bag is going to get mighty expensive.

Now, if that bed has a solid bottom (minus the drain holes), its a large container and I would go heavy on the sphagnum and light on the soil (or not at all, but since you have it, no use wasting it.) Of course that is purely preference and I DO have one half barrel planted with mint that is filled with dirt soil rather than potting mix and the mint grows beautifully so there's that lol.

Zach, This one has no bottom and is 3'x6'x16" deep. I put a layer of cardboard in the bottom to kill the grass. I probably should have just used topsoil in the bottom. But what's done is done. I'll be adding some additional compost and some higher-quality soil to the top layer for my precious tomatoes!