"kate" wrote in message ...

kate wrote:
I am still wondering though how far the walnuts need to be from pines to
keep from harming the pines.

Kate

The problem from Black Walnut is not from the roots, but from the alliopathic compound (Juglans
IIRC) that is contained in the leaves and the hulls of the nuts. This compound leaches out into the
soil and prevents other plants from germinating or from growing well (or at all). Any other plants
that are much beyond the drip line of the Black Walnut trees should have no problem.

Bob Weinberger