Strata laws regarding this are very similar in QLD to NSW and when I moved into my complex at the first AGM we voted to allow owners to look after the gardens (common property) at the front of their units if they wanted to.
After 13 years the system is still in place, and about 50% do and the rest is taken care of by the gardener. Mainly owner/occupiers do their own and the tenants have the gardener looks after them.
We have had a number of different owners and if a new owner neglects the garden the gardener does it. Works for us.