Police are assisting in an investigation to find who deliberately uprooted a 50ft ash tree in the village of Passenham, Northamptonshire, on the county border with Buckinghamshire.
Rob Riekie, landscape and operations director for The Parks Trust, Milton Keynes, said: "This was a well-established ash tree, roughly 50ft high with a crown of about 45ft.
"It was deliberately uprooted some time between December 2015 and early January 2016 on Trust-owned land at Old Stratford/Passenham.
"This is a criminal act and Northamptonshire Police has been notified."
Anyone with information about this criminal damage should contact Northamptonshire police or The Parks Trust.