Tahbilk vineyards are grouped along the banks of the Goulburn River and an anabranch that flows through the estate. The water has a tempering influence on the climate. The vines are grown at approximately 134 metres of gently undulating and flat terrain. The soils are sandy loam with ferric oxide content, which varies from very fine sand near the anabranch to denser loams on the plains. The Viognier vines are cloned HTK and are grafted to Schwarzman rootstocks. They are trained on a single wire trellis with a mixture of head and cordon training and are spur-pruned. Tahbilk's vines are sustainably cultivated; composting and mulching take place, which improves soil health by promoting earthworm activity. Mulching helps to control weeds and conserves water, reducing vine stress.