Cairns Regional Council Verge Garden Guidelines
Planting is restricted to well back from the roadside:
Residents may plant vegetation in a well-prepared cultivated area within the natural ground, set back a minimum of 3.3 metres of a kerb without a footpath and 3.8 metres with a footpath – if a road verge cannot accommodate the minimum requirements a verge garden is not recommended.
Cairns may have much wider verges than many other cities.
Council plants and maintains trees, residents can grow low-growing preferably native plants.
Perhaps, the most interesting thing about this policy is the photo gallery of non-compliant verge gardens.
See https://www.cairns.qld.gov.au/community-and-environment/trees/public-vegetation-management/landscaping-on-council-controlled-land for details and click on the link for the pdf document