 Twisted Gum Wines, Sustainable Dry Land Vineyard Twisted Gum Wines near Ballondine has introduced a unique and innovative sustainable vineyard management system. This involved growing the vines in small blocks surrounded by native forest without using irrigation, maintaining a permanent grass sward between rows and spreading large amounts of mulch under vines. The system means there is no need for insecticides and reduced chemical fertilisers, fungicides and herbicides. Energy requirements are reduced. There are improved water flows in the river system, reduced greenhouse gases and improvements in biodiversity.