There was a lettuce in a tree in Glasgow that got the same treatment. Non of the locals had a clue what it was.
I stumbled upon a feral Victoria sponge cake in the woods recently, perhaps I should have called the RSPC.
Our back garden was overrun by Black Forest Gateaux. Rent-o-kill had a hell of a job getting rid of the little buggers. Invasive species you see, displaces the native Eccles cakes.