The council said there are two phases to tidy up the open section of land.
The first phase is now complete and involved cutting down some trees, planting others and creating a picnic lawn.
Phase two involves putting mixed grass in new raised planters for “picnics, play and pause”.
New timber benches will lead to a viewing platform by the riverfront, new metal railings to the water’s edge and some more planters and trees.
A council spokesperson said: “We are unable to complete Phase 2 at the moment as it’s dependent on finalising the canal sheet piling works.”
It said “once the sheet piling work is delivered…we can then finalise the Peace Garden Phase 2.”
Sheet piling means repairing work to the canal edge along the Wharf.
Ms Sturgess said: “The Peace Garden was not an inviting place to be.
“Improvements to the garden will make it bigger and turn it into a welcoming green space where everyone will be able to walk and relax.”