Why it matters
The producer
Gemtree Vineyards sits at McLaren Flat on the southern edge of McLaren Vale, farming 93 hectares under full biodynamic certification. Melissa and Mike Brown established the winery brand in 1998, though the family had been growing grapes on the same land since 1980. They made Shiraz the centre of everything: not because McLaren Vale leaves you much choice, but because they chose to take it seriously across every tier of the range.
The farming philosophy took a formal shape over time. Organic certification came in 2011. Biodynamic practice followed, defined at the estate as a commitment to natural soil improvers rather than chemical sprays. Paul Carpenter leads winemaking; Alexia Roberts leads viticulture. The Browns sold to Randall Wine Group in October 2023, and the certifications have carried forward under the new ownership.
Place and vineyards
Where the wines begin
McLaren Vale is a wine region south of Adelaide, running between the Mount Lofty Ranges and the Gulf St Vincent. The Mediterranean climate brings dry, warm summers and enough maritime influence to moderate ripening. Shiraz thrives here, developing the dark fruit weight and spice that the region is known for while retaining enough acidity to hold the wine together.
McLaren Flat is a township within McLaren Vale, low-lying and close to the valley floor. Gemtree's 93 hectares sit here, within easy reach of the cooling air that comes off the gulf in the afternoons. That moderating effect shows in the wines: McLaren Vale Shiraz at its best is full-bodied but not blowsy, with a spice and mineral note running alongside the dark fruit. The biodynamic farming at Gemtree works toward that balance from the ground up, targeting soil health as the precondition for fruit quality rather than using interventions to correct for deficiencies.
In the cellar
Vineyards and cellar
Biodynamic farming at Gemtree means the 93 hectares are managed without synthetic herbicides, pesticides, or fertilisers. Natural compost and biodynamic preparations replace chemical inputs, with the aim of building soil microbial life rather than working around it. The practical consequence for the fruit is a vine that draws more directly on soil conditions, with ripening shaped by the land rather than corrected by the cellar.
The Uncut Shiraz name signals the winemaking approach: minimal intervention in the cellar, with the fruit doing the work. The palate character of that wine reflects a cellar that integrates rather than extracts: tannins that feel sueded rather than angular, a smooth, full-bodied mouthfeel, and bright acidity that lifts rather than grips. The Dragon's Blood Shiraz is more extracted, with higher tannin levels and a darker, jammier profile suggesting more contact and more oak presence during ageing.
Wines to know
The range in view
Shiraz anchors the own-label range. Two cuvees have verified tasting material.
The Uncut Shiraz is the serious-side expression. It is full-bodied and spice-forward, with the nose showing blueberry and red berry, spiced raspberry, kirsch, mint, and a savory mineral note. The palate is dense and smooth, with sueded tannins integrated into the body and bright acidity providing balance. It is not angular or aggressive; the texture is generous and the finish is long. This is a wine built for the table, food-friendly and structured enough to hold for several years.
A useful way in
A bottle to begin with
Start with the Uncut Shiraz. It is the cuvee where Gemtree's biodynamic farming and minimal-intervention winemaking are most clearly expressed: blueberry and spiced raspberry on the nose, a dense, smooth palate with sueded tannins, bright acidity, and a finish that holds. The tannins are substantial but integrated, not harsh, and the wine is food-friendly. It carries the full-bodied character McLaren Vale Shiraz is known for without the dark-jam extraction that can flatten a wine's complexity. One bottle here explains the farm, the cellar philosophy, and the grape in the same pour.