Are there any sustainable or organic South African wineries?

Emphasis on sustainable wine making is associated with many South African vineyards, which are taking measures such as conservation of biodiversity, water management, and viticulture in an organic way. To give a few illustrations, Waterkloof Estate is one of them, Spier Winefarm, and Reyneke Wines are all committed to environmentally sound practices in the process of making wine.
Please, mind that only logged in users can submit questions