1. Get a clean plastic bucket (not metal) and spoon/spade. If you are using a metal shovel make sure you do not take the soil that touched the shovel directly.
2. From 3-5 random places in your sample area, dig a 6" hole. From the bottom of each of these holes collect one cup of soil. Keep in mind we want the soil from the root zone. Not from the surface.
3. Mix all the soil together to make your one soil sample.
4. Place 1 pint of the mixed soil in a clean plastic zip lock bag.