I have a neighbor for whom we have no use, so here's what I did about it in today's snow/ice storm.

[electric_blue68]

15. I alwsys have to run to the meters feet conversion chart!...

Yup that's a tall tree.

So, did some husks break open so you could see the walnut shell? Or you drove over some husks and then saw them.

I like the feature where I can highlight a word; and cut, copy or define show up as choices - which is what I did for
juglone, before your next paragraph regarding it's herbicide attributes.
Ohh, well, about your tomatoes. Hopefully you picked a safe area yo plant them.

Too had about losing your interesting neighbor.

I'm an artist, and crafter who also enjoys science; most often the earth, and space related sciences. So, yeah, I've read up on the general biology of trees, and occasionally specifics.

Interestingly, a piece on my Google feed showed up a few days ago on the American Chestnut. A scientist perhaps growing (I think) /or tracking a pretty big stand of them up in Maine.

If you're growing a new one from the one that eventually got infected - won't it get infected, or some small percent are resistant.

As a ?4th grader or so waaaay back I unfortunately witnessed the Dutch Elm disease disaster in NYC. We lived on an avenue originally lined with tall elms; about 5 to 7 stories high.

I came home one day from school to find they'd just sawed down the tree on my building's corner. Luckily, the two on the next block north survived! Haven't been in that old nabe of mine in several years; but at least at last visit they were still there.

.ETA.
Did you see applegrove's " moment of zen" post? They put up a lovely painting of "tree crown" shyness. Which IRL I noticed myself in a grove of pkanted trees