After forming in response to the City cutting down seven mature trees at Halliday Park last year, the network's campaign has helped push change within the local government.
The felling of the trees followed Councillor Chris Cornish's motion, which was supported unanimously in Sep- tember, to increase the City's tree canopy to 20 per cent by 2025.
Cr Cornish said attitudes had now changed, policies were changing and City streetscapes were improving with the greening of Bayswater starting.
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READ NOW"Over the past four years of my term as councillor, I have observed that the officers" recommendations were pretty consistent " they opposed the cutting down of trees," he said.
"Over the past year, this seems to now be the view of the council as well."
Cr Cornish said the City had recently planted trees throughout the area, including on Guildford Road, Crimea Street and Broun Avenue.
Cr Cornish said there had been a dramatic decrease in planning approvals for people wanting to cut down verge trees.
"What was previously almost a fait accompli and occurred multiple times every month is now not happening," he said.
"Countless trees are now being kept when they would otherwise have been destroyed.
"Also, in order to placate those annoyed over the Halliday Park tree removals (which were subject to an arborist's report deeming them unsafe), it was suggested that two trees were planted for every one removed. This seems to have now become standard operating procedure.
"For a variety of reasons, trees sometimes need to be destroyed. Now, when they are they are generally being replaced on a two-for-one basis."
Cr Cornish said there was a "tremendous" amount of work still to be done, including a review of pruning policies and a need for a significant tree register.