On 2/18/2013 6:30 PM, cj wrote:
I would like to built a small raised flowerbed (knee high) around the
base of a mature oak tree. My question is having the dirt in contact
with the tree bark going to harm the tree?

Thanks, CJ

On This Old House they showed the problem with too much mulch around the
tree caused root growth into the mulch that harmed the tree.