Tinja has now been certified organic for over 20 years. Organic certification involves auditing by a registered authority, in our case ACO (Australian Certified Organics) who ensure all stages of the farming, grape growing and winemaking comply with a strict regime.
Herbicides, insecticides and most fungicides are all prohibited, with only naturally occurring and non poisonous chemicals such as copper and sulphur allowed. In dry years we aim to be completely chemical free, and use half the organic standard of natural sprays in wet years.
Instead we aim to lift vine and plant strength through soil health and complexity, and combat disease through an active and competitive leaf surface biology, essentially crowding out disease causing organisms.
Anything we add to the land must also be organic, particularly fertilizer. This is why we have our own large scale organic compost to use as fertiliser, and any mineral elements added are in a mined not refined form.
Organic processes also extend to the winery, where the same thing goes: no use of cleaning agents like chlorinated compounds are allowed, and no organic wine can be mixed with non-organic wine.