I am thinking about starting a garden. I have a nice area that has full sun but the only thing I am worried about is this spot is where I have been dumping horse manure. I have a couple inches of manure in some spots and other spots have about a foot or so of manure. I am planning on planting some Peanuts, Corn and Potatoes ect. in this particular spot. Do you think that this horse manure will affect my crops? Thank you for all and any input.