More on walnuts

Black walnuts are supposed to be classic cases on allelopathy. Yet there is nothing in these “Caddo” black walnuts that really says “allelopathy” very strongly. Many trees had close neighbours, and several of them had Virginia Creeper growing on them. Not exactly what I would expect of an allelopathic tree. [...]

Methodist canyon

On Friday I went out to one of the Caddo canyons with T.H. Milby and George Geissler (a state forester) to core black walnut trees that are parent trees in T.H.’s study.
The last time I did any tree-coring it was some of Lissa’s Austrian Pines at Saugatuck Dunes State Park. That was [...]