Property line/tree neighbor question

[PeterB]

Unfortunately, I don't think I have photos from when they first planted it. Partly because it was during corona times, when I was (and still am) barely venturing out from the house. I didn't say anything to them about it at the time partly because I wasn't myself sure about where the property lines were, and also partly because I didn't want to make a stink about it. Also, I didn't know that it would be getting considerably bigger. I do agree that it was unneighborly of them to plant it without discussing it with me first.

I'm also not sure that it IS their property, if planted on the property line... from what I can tell, the law here seems to suggest that it is co-owned (with co-responsibility for it) if it's on the property line.

I'll see if I can find the property line information in the deed.