Yes, I have seen that with the Black Walnut.
The English Walnut is quite well-behaved. The grass is nice and thick underneath and the chestnut and almond nearby are thriving.
Thanks. I just wondered.
There are always plants that can thrive anywhere. Even as I yank them (the ones labeled as invasive species in Ohio), dig them, and chop them out of my yard, I have to admire their tenacity.
Back to this discussion - I was browsing some pics of Encyclia vitellina that were growing VERY WELL on Scrub pines. They were both on the top of the branches and attached on the side of the tree trunk, with their root thickly carpeted with needles. Obviously there are some species that can tolerate the resin and subsequent toxins.
Just that I would throw this in the mix........If I find the pic again, I will try to post it as it was pretty breathtaking as this variety is vivid red with a yellow throat, and the in situ plants were in full bloom.