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
Vintage 2005 was early, warm, quick - fantastic quality with good yields - and exhausting.
Above average winter rains led into a beautiful spring, with some early November frosts but good flowering weather in late November and early December. Summer was wet and wild, with an amazing roller-coaster of weekly thunderstorms that helped maintain good subsoil moisture. Rains in January were followed by a dry February, and the dry weather continued right through the autumn. Warmer than usual autumnal weather caused an early, compact harvest of above average yields. The late Indian summer lasted into May, well after all the fruit was harvested with colour, flavour and maturity figures not seen since the 2002 vintage.
The quality of the 2005 vintage is sure to be ranked as one of the best on record, after 2002, with all varieties showing strongly. Once again the signature varieties for Eden Valley, ie, riesling and shiraz, performed brilliantly.