In semi-arid southern Australia, even with a native (low-rainfall) grass, the "lawns" need help through the summer. In the cities I've no idea of the split betw

In semi-arid southern Australia, even with a native (low-rainfall) grass, the "lawns" need help through the summer. In the cities I've no idea of the split between native grasses and thirsty "decorative" grasses - but both are common.