building a berm
Ok I have a low spot in my yard almost on the property line between 2 pine trees. I have some acid loving bushes I would love to put there. Being it is a low spot and water collects I need the build a berm. I would like to do this try and do this without spending a fortune on topsoil. This is what I have on hand large amount of pea geavel and sand mixed and numerous bags of brown shredded mulch. I would need to purchase the top soil. Any advice?