The type of vegetation which grows in your area is determined by soil type, rainfall and aspect (slope).
In broad terms the bioregions which exist in the area, Central Victorian Uplands (granite), Goldfields (sedimentary) and Victorian Volcanic Plain (volcanic), replicate the soil types and hence determine the native vegetation which grows in the area.
The exception to this are the granite soils in the under 500 mm rainfall zone, which in general behave more like goldfields soils due to the rainfall variation to the true Central Victorian Uplands, with rainfalls of 700+ mm annually.
Rainfall date for your area is easily obtained from the Bureau of Meteorology website, http://www.bom.gov.au then type your nearest major town into the search function.
Aspect is usally broken into four categories for ease of interpretation, being hills, slopes. flats and depressions or drainage lines. Vegetation species will vary across each because of the fertility of the soil and the availability of moisture.
The extensive lists that are in written form are currently being re-produced for this site, and will be uploaded as completed.
An example list is: Vegetation list goldfields +500
For smaller properties and/or gardens you can read through this native plant guide. It is based on the ballarat region but most plants that are listed in the guide will grow well in similar areas.