Mount Edelstone (from the German 'Edelstein' meaning gemstone) is a single dry grown Shiraz vineyard planted by Ronald Angas in 1918 and through the 1920s. Henschke made wines from Mount Edelstone as early as 1952, although Cyril Henschke did not purchase the vineyard until 1974. By this stage Mount Edelstone was already recognised as an important vineyard site. Located on the eastern slopes of Mount Edelstone this 40 acre vineyard comprises low yielding gnarled vines, many well into their eighties and planted on deep red sandy loams over laminated siltstones. This low input vineyard is being gradually re-trellised to the Scott Henry system, where shoots are trained upwards and downwards to maximise exposure of leaves and fruit to sunlight. The oldest vines are trained on a traditional two-wire trellis. The site is cooler and higher than the Barossa floor although the climate is essentially Mediterranean. Vintage takes place in mid to late April. The wine is fermented in open top slate 'headed down' fermenters. Fermentation is completed in a combination of new American and French oak.
Henschke Vineyard Technical Information:
Location: Eden Valley wine region, 4 km north-west of Keyneton in the Barossa Range of South Australia.
Varieties: Shiraz, on own roots, dry grown.
Wines Produced: Individual vineyard bottling since early 1950s.
Age: Planted in 1918.
Average Yield: 6 tonnes/hectare (2.5 tonnes/acre).
Soil: Deep sandy loam, over red clay loam, overlying laminated siltstone.
Trellis: Five trellis types - Twin Wire Vertical, Vertical Shoot Positioned, High Single Wire, Scott Henry System and Smart Dyson.
Planting: Wide planting – 3.7 m x 3.7 m giving 783 vines/hectare. Rows are planted east-west. Dry grown.
Treatments: The vines are mulched with wheat straw with a permanent sward of grass in the row, so herbiciding and working the soil are techniques no longer used.
Maintenance Quality: Mass selection carried out over three growing seasons. Establishment of a nursery source block. Assessment of trellis systems and use of rootstock.
Rainfall: Average annual, 600 mm.
Altitude: 400 metres
Latitude: 34 degrees 32'
Longitude: 139 degrees 06'
Size: 16 hectares (40 acres)
Awards: National wine show awards for every vintage since first shown in 1956
Year Vintage Quality Optimum Drinking
1984 Excellent 20+ years
1985 Very Good15+ years
1986 Exceptional 20+ years
1989 Great 15+ years
1990 Exceptional 20+ years
1991 Excellent 15+ years
1992 Excellent 20+ years
1993 Great 20+ years
1994 Exceptional 25+ years
1995 Excellent 20+ years
1996 Exceptional 25+ years
1997 Very Good15+ years
1998 Excellent 15+ years
1999 Excellent 20+ years
2000 Great 15+ years
2001 Excellent 20+ years
2002 Exceptional 25+ years
2003 Great 15+ years
2004 Great 20+ years
2005 Exceptional 20+ years
2006 Excellent 20+ years
2007 Great 15+ years
2008 Great 15+ years
2009 Exceptional 20+years
2010 Great 15+ years
The 2010 growing season was preceded by above average winter rainfall that built up moisture in the soil profile and provided water for the dams. Spring was mild with little frost damage and gave us an even budburst. The weather remained cold and wet through spring which held back growth until a two-week high 30s heat wave in November affected flowering and fruit set. Spring rains continued into early summer right through until mid-December, making it the wettest year since 2005.
The vines responded to the heat and grew vigorously until early January, developing lush canopies, but bunch development suffered as a result. A roller-coaster-ride of heat spikes and cool changes continued through a warm summer with occasional thunderstorms. The vines continued to look very healthy and went through veraison a week earlier than in 2009. Lower yields coupled with the mild ripening period resulted in incredibly concentrated fruit. Vintage began a week earlier than last year, on February 8, and was in full swing by mid-February. The white vintage was all but finished a month later, with no signs of sunburn or drought-affected berries. The red harvest continued with deeply coloured, well-balanced grapes being picked during superb mild, dry conditions through to the third week of April. The signature varieties of Eden Valley, riesling and shiraz, once again produced exceptional quality with great acid balance.