““Get a large tarp, at least 16 × 16-feet, and open it near your garden where you have all your boxes built and located. Make sure you have them in their final resting place—check with the boss one more time and ask, “Are you sure this is where you want all the boxes, dear?” All of the three ingredients are dusty when dry, so do this when there is no wind. Don’t do it in the garage, or you’ll get dust all over your nice new car or workshop. Wear a painter’s mask and have a hose ready with a very fine spray. Don’t forget to have a few mixing tools ready like a snow shovel, a hoe, or a steel rake. Count out the bags and boxes, do the math one more time and start opening the bags and pouring the contents out on the tarp without walking on the ingredients. Roughly mix the three ingredients as best you can as you pour it. Then drag two corners of the tarp to the opposite two corners. You’ll see the material roll over, mixing itself. When you’ve pulled the tarp so that the mixture is almost to the edge, move 90 degrees and pull those two corners over. You just work your way around the tarp and repeat pulling corners together until your Mel’s Mix is uniformly mixed. It’s finished when you don’t see any single material or one color. Use the hose with a fine mist or spray to wet down any dust, but don’t spray so much you make puddles or wet the ingredients so the mixture becomes too heavy to move easily. Don’t let the kids play in the mixture, or they will crush the large particles of vermiculite. (By the way, I’d save a small plastic bag of vermiculite for seed starting. We’ll get to seed starting in the next chapter.) The next step is to fill the boxes, wetting down the mixed-in layers only as you fill it. Once the box is full and the top leveled off, don’t pack it down. It will settle just right by itself.””
