The plane trees, each around 250 years old, are set to be pruned back and then eventually cut down in the London borough of Hackney due to fungus, which is eating away at their roots.
Though the trees are seen as something of a local landmark, representatives state that their roots are being eaten away by a fungus, which is leaving them dangerously unstable.
The news was delivered at Clissold House on Tuesday by Hackney Council arboriculture specialist Thomas Campbell, who said new trees would be grown from cuttings of the two in question.
A town hall spokesman said: “Following a public consultation Hackney Council will undertake crown reduction works to safely manage the decline of the two mature London plane trees to the rear of Clissold House.
“Unfortunately both trees are colonised with Meripilus giganteus decay fungi which has compromised the structural integrity of their root plates.
“It is hoped that this work will enable the trees to be retained for as long as is safe to do so for the benefit of all who visit the park.
“Twenty-three replacement trees have been planted in Clissold Park this winter and new trees will also be grown from cuttings taken from the two London plane trees.”