Hello, I have just set up two 4x4 garden beds in my backyard and my family and I are not sure what to use for the soil. We are holding off getting soil because we want to make sure we get a good soil all around. We thought of using mushroom manure, but we aren't really sure. We'd like to use a close to organic soil as possible but I'm having trouble searching for some of the soil online. I live in a complex so the yard is on the smaller side so we can't really start our own compost site. Thank you!