bill a wrote:
I'm trenching out along a shallow foundation to install drainage.
There is
a few tree roots here and there that I'm chopping out along the way.
Is
there anything I can add to the backfill to sterilize the ground so
the
roots don't grow back too quickly? I am not concerned about the
welfare of
the tree itself. If it dies in the process, no problem.
Thanks
Bill

Coarse salt - comes in 50lb bags.