Blacktown City Council - Nature Strip Policy
It is Council’s preference for vegetated road verges and nature strips to remain predominantly grass or turf species with a street tree planted in the vegetated road verge. However, should the resident wish to convert their vegetated road verge from grass to a low shrub garden bed or to synthetic grass,
You must request our permission if you propose to modify a nature strip. Modifications may include converting traditional grass verges to low growing shrub gardens or in some cases synthetic grass.
Allowing synthetic grass is a surprise but further into their policy, it says:
The use of all synthetic turf is not encouraged throughout Blacktown City due to the adverse effect it has on the environment.
Other than that, it includes the standard items, allow for pedestrians, maintain sightlines, no edging rocks or other trip hazards.
All excavation and cultivation works MUST be completed by hand.
See details at https://www.blacktown.nsw.gov.au/Services/Nature-Strips