It seems every year we receive questions about what to do about trees growing on and around septic system components, most often the drainfield area. One question was whether trees survive if they are in contact with fill used to complete mound construction.The direct answer is no, they will not survive if fill is brought up around the tree and the bark is in direct contact with soil. It may take a year or two but a fungus will develop in the bark and ultimately the tree will die. In other landscaping situations, trees can be protected from this fate
