Grape phylloxera is regarded as the world’s worst grapevine pest. Since the mid to late 19th century, it has devastated vineyards across Europe, North America, New Zealand, South Africa and parts of South America and Australia. Productive viticulture cannot normally continue on own-rooted vines following an infestation by phylloxera.

The only effective long-term management strategy for controlling phylloxera is a replanting program using vines grafted on phylloxera tolerant rootstocks. Such rootstocks are bred from grapevines native to North America known as American vitis species. These particular species evolved in the presence of the phylloxera and so developed tolerance mechanisms that allowed them to continue to flourish in the presence of the insect.

Use the following drop-down list to view the rootstock report for South Australian wine regions.