If you've ever visited the Australian Botanic Gardens in Mount Annan, chances are you have come across a bright blue tree.
However, the tree - which was once a popular photography destination - was removed earlier this year.
The tree was more than 150 years old and had been on display at the gardens for the past 20 years.
Works to remove the decaying tree were carried out in May, 2021.
"The tree was originally painted more than 20 years ago to raise awareness about the importance of the retention of dead trees for wildlife habitat in our natural environment," a statement posted to the Australian Botanic Gardens, Mount Annan website stated.
"The tree became a popular landmark at the garden and offered a creative opportunity for visitors to learn how trees play a crucial role within their ecosystems for maintaining biodiversity while living and long after they have died."
The statement said despite the tree dying in the 1960s, most likely as a result of a lightning strike, each tree species varied in its rate of decay.
"The hard nature of this Eucalyptus crebra (Ironbark) species, considered one of the hardest woods in the world, has enabled the tree to last a further 60 years in the landscape beyond its 150+ year growing life," it said.
"Based on the results of a detailed arborist inspection, the tree has lost several large branches and its structure is no longer stable. For the safety of our visitors we will remove the remaining parts of the tree."
An Australian Botanic Gardens spokeswoman said there were no plans to replace the tree at this stage.