QuestionI have an old maple tree in my front yard. The trunk of the tree around the roots seems to be bulging up. Is this something I should be concerned about, since I fear it might topple during a severe wind storm or hurricane. Please let me know what you think.
AnswerIf I am getting this correct the roots are above ground and you want to know if it will cause any damage if they were covered. You are correct cutting the roots will cause damage to the tree. As far as structure the roots will be fine and still hold the tree up just fine. The problem would be trying to mow over the exposed roots and damaging them but cutting the tops off.
Most people are surprised to learn that 90 percent of the fine roots that absorb water and minerals are in the upper 6 to 12 inches of soil. Roots require space, air, and water. Roots grow best where these requirements are met, which is usually near the soil surface. Piling soil over the root system or increasing the grade smothers the roots. It takes only a few inches of added soil to kill a sensitive mature tree.
You can cover the exposed roots of trees as long as you do not add more than 2 inches over the top of the roots. Sand is the best since it is less heavier than clay or loam. Do not pack the sand down. Since the water table is not far beneath the surface over the years the roots may again become exposed from the growth. When this happens just add more sand. There is not really good data to say how long before they will reach the surface OR if they will. I would say guessing over 5 years.
I hope this is what you are asking.
