It's expected to take two or three days to remove the entire tree from the bedroom community about 30 miles west of NY, which has long celebrated its white oak.
The 600-year-old tree in Basking Ridge, New Jersey, would not withstand upcoming "harsh winters or spring storms", said arborists, reported NBC New York.
The old tree's removal is a reminder of how older trees are starting to become less common across the nation. The old tree, declared dead last summer after it failed to sprout foliage, is scheduled to be chopped down soon.
In the last several years, the tree began to suffer from poor health.
The tree at the Basking Ridge Presbyterian Church in Bernards has been an important part of the community since the town's inception in the 1700s. Community historians said Gen. George Washington had a picnic under the tree with Marquis de Lafayette.
But its legacy will live on - a new white oak tree grown from the old tree's acorns was recently planted at the church.
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But the tree believed to be among the oldest in the nation is not long for its place in the church graveyard that it's called home for 600 years.
"If we go back in to the church records and look at the bill that came in from the tree company in 1924, there is a line item that says 3 tons of concrete", he said. It stands about 100 feet tall, has a trunk circumference of 18 feet and has a branch spread of roughly 150 feet.
Both Malay and Township Administrator Bruce McArthur, who is also a local resident, said they expected that the tree's removal would be a fairly slow process. "It's a sad sight to see it come down", said one resident. 'It has always been there, even before there was a town, and over the years many people have met there, been photographed there, had a meal under the tree. At first, officials thought they would be able to simply remove segments of the larger limbs, but the rot was too severe.
Crews are due at the Basking Ridge Presbyterian Church in Bernards on Monday to start removing the 600-year-old tree.
Some tree fans visited the tree to say goodbye to their close friend.
"It is emotional", resident Glads Perez told News 12 New Jersey. A much younger 25-foot white oak grew from an acorn that fell from the very big mother tree.