Check your soil’s texture, to determine if you have predominantly sand, clay, or silt and what you will need to add to get to the ideal sandy loam. You’ll need a small shovel or trowel, a glass jar with straight sides and a tight cover, 1 tbsp. dish detergent, soil sample (about 1 cup), water. Scoop up about 1 cup of soil from 4 – 6 inches below the surface of your garden. If you have a small garden, you can mix soil for 3 – 4 different spots. If you have a large or spread out garden, it would be better to test several samples separately. Remove any stones, sticks, or other foreign debris and break up any large clumps. Keep reading the tutorial in the source.