it like for Growing Marijuana in a swamp and would I even have to
water or give nutrients to the plants as the soil is very black and
growing in a swamp you have to dig down and see how deep the clay
underneath is. If the soil is too moist you will drown your plants.
I would recommend putting some peat moss into the ground and some
dolomite lime. I would give nutrients, probably miracle grow or
something like that.
pictures below for enlargements.