12 July 2022 — Despite the date, this post has nothing to do with King Billy and everything to do with the Ghost of Ivy Past.
Remember? The West 6th Ave. wall that had been stripped of its once-rampaging ivy, leaving behind this ghostly root-print.
Two different reactions, in reader comments:
1 – Nancy L. does a little hop of glee: “The only good ivy is ghost ivy”… while
2 – a member of the Medicinal Plant Specialist Group rises to the botanical challenge. “Not Virginia Creeper, but something rootier…” which therefore requires “a nerdy search of ivy roots.”
Nerdy search conducted; seriously rooty culprit found & identified.
English ivy.
That Group member may now add one more title to an already-impressive list of academic & professional credentials (along with the personal title of Cherished Friend):
Botanical Ghostbuster!
WALKING WOMAN 
Lynette d'Arty-Cross
/ 12 July 2022Excellent find! The picture and the mural definitely look alike. Cheers.
Blane Hogue
/ 13 July 2022I liked this walk, but am disappointed at the dismissal of King Billy on the Glorious Twelfth. No surrender!
icelandpenny
/ 19 July 2022fiddlesticks!
bluebrightly
/ 15 August 2022Clever all around! I’ve never heard the term ‘Ghost ivy’ and I like it – I have noticed it here and there and naturally, I liked it. Wish we could turn the English ivy in the trees in some places around here into a ghost!