Enfield Council says it has carried out extensive works over the years to protect the historic Oak, but even more needed to be done. Councillor Chris Bond, said:
"Our primary objective is to save this fantastic natural monument which predates the Magna Carta. Doing nothing is not an option, because unless we take decisive action, this historic and much loved tree will fall over.
"If that were to happen the it would cause extensive damage to the park and potentially damage nearby homes. "The action we are proposing, while drastic, gives the tree a good chance of recovery and means that future generations can enjoy it for years to come."
More top news
West Ham have opened an investigation into a flyer that was allegedly distributed ahead of the game with Chelsea.
Damon Joseph Smith smiled and waved at his mother, who waved back.
Tanguy Marie De Carne, 53, jumped red traffic lights and rode on busy pavements through the City pursued by police