Hickory in the park

[stripperguy]

I had a short row of black walnut trees at our old house...we lived in that house for 35 years and a handful of those black walnuts jumped up along a neighbors privacy fence. (we had 8 neighbors along one of our property lines, none ever coordinated their adjoining fence lines).
We did harvest the nuts, but I don't care for nuts and MDB didn't like them either.
But all of my lilacs near the black walnuts slowly died off...I had 600 feet of beautiful, double blossom fountains of color and fragrance, except for those 80 feet. I later learned that the black walnut trees poison the ground around their roots, to lessen competition for water and nutrients.

[montcalm]

I later learned that the black walnut trees poison the ground around their roots, to lessen competition for water and nutrients.

Yup - they have a mild toxin. I believe all plants in Juglandaceae have Juglone, which is a toxin.

It's called allelopathic (or allelopathy) when it's used to control surrounding plants. Other plants have it as well. I know oaks are said to be mildly allelopathic, but it only appears to affect certain plants.

As far as the walnuts, it can affect a number of things. My neighbor has one that borders us and it drops nuts on our property. They don't seem to kill anything although he said he had trouble growing grass near it. It might also be that it has such a dense canopy. It's almost completely dark underneath it in the summer.

[EagleCrag]

I have a friend that owns property along Middle Road out of Willsboro and they have hickories on thier property. Not sure what kind.

[montcalm]

https://youtu.be/AONoQy05ZdA

The answer to my question was found here, but thanks for all the previous replies. Champlain valley is the spot.