The Common which was formally the Wangaratta aerodrome is a grassland area of 42.6 hectares. It adjoins a comparable area of public land that is managed as a conservation reserve, giving a combined area of about 72 hectares.

Despite the likelihood that this area was originally an open box woodland which was cleared to make way for the aerodrome, the Common is now considered a grassland because much of the original grassy ground flora has remained. About 96 species of native plants have been listed, with a particularly high representation of grasses and spring flowering plants. Its importance as a grassland area is in the combination and diversity of grass species present, and the fact that the area is a large compact area rather than linear. One species present, Diuris punctata, is currently considered vulnerable in Victoria.