On Monday morning, members of the group tied crocheted messages that read 'love', 'hope' and 'life' to the mature trees between George Street and William Street.

River Yarners spokesperson Sally Neaves said the concerns raised to council over the removal of the trees had fallen on deaf ears, leaving the group with no other option but to make its voice louder.

"Nothing seems to be getting through to council," Ms Neaves said.

"We are concerned if they take them away there will be very little shade in the area and it will be less beautiful."

In April, 2015, Council accepted a three-stage project that would see the London plane trees, as well a some crepe myrtles, on Durham Street removed and replaced with different varieties that better suit the area.

The three stages were budgeted to cost almost $190,000, with council planning to bring in mature replacement trees rather than saplings.

While members of the River Yarners support council's advance tree planting program, they would much prefer to see the mature London plane trees saved.

They believe the benefits of mature trees in a warming climate outweigh the inconvenience and possible extra expense of managing the root systems of the trees.

"The message is that we really value trees and we don't want to see them torn down," Ms Neaves said.

The idea for the crocheted banners was devised several months ago, with members of the River Yarners working on the patches up until now.

This is the second time the River Yarners have exercised activism through crocheting.

Last December, the group joined with other environmentalists to create a yarn project against the proposed sale of council's treated effluent to a new gold mine near Blayney.