Councillor O'Leary said the cherry trees were a perfect choice given Margaret attended multiple Zoom meetings with blossoming cherry trees as her virtual background.
"She was still attending meetings just weeks before her death and those trees were a constant.
"Whenever I drive past the grove I will think of Margaret, particularly in spring and autumn when I know they will look stunning. It's a wonderful legacy from the city and a lovely way for me to remember a good friend."
Ten cherry trees have been planted in the Rostrevor St side of Hinemoa Park within the Western Town Belt. There is potential to lay a cycling and walking path through the grove, linked to other trails around the city.
A plaque acknowledging Margaret Forsyth and her achievements will be added to the grove in future.
The trees are Mountain Haze (Prunus yedoensis) cultivars, growing to around five metres high. This kind is known for their masses of scented small pale pink to white flowers with deep pink centres in early spring.