Marion's Vineyard
Marion's Vineyard – overlooking the kanamaluka/River Tamar near Deviot – was established by Mark and Marion Semmens in 1979. They moved from California and purchased a neglected apple orchard, transforming it into one of Tasmania's earliest family-run vineyards.
The venture was originally called Tamar Valley Vineyards. Within a few years of producing wine under that label, the Semmenses wisely renamed it Marion's Vineyard.
At a time when the island's modern-day wine industry was in its infancy, the Semmenses were pioneers. They planted diverse selections of wine varieties and experimented with sustainable practices long before either became mainstream.
Mark's vision and optimism were matched in equal measure by Marion's tireless energy in the vineyard. Her capacity to draw upon her Cypriot heritage seemed boundless. There was always great food within reach of a glass of wine. Always.
Industry trailblazers, the couple opened Tasmania's first vineyard cellar door in 1983. Mark and Marion both played key roles in the establishment of early food and wine events in the Tamar Valley.
By 1988, renowned author and critic James Halliday was writing:
"A beautifully situated winery on the banks of the Tamar River, producing wines of considerable strength and individual style."
Mark Semmens sadly died after a long illness in March 2022.
Today, daughter Cynthea Semmens manages both vineyard and winemaking – continuing a 40-year legacy with renewed energy and a biodynamic focus.
Semmens has proven to be a talented performer in both her roles. A Wine Science graduate from Charles Sturt University (2000), she also has an Associate Diploma in Wine Marketing from the University of Adelaide's Roseworthy College. An invaluable tool in today's cut-throat world of wine retailing.
A woman of many talents, Semmens repairs her own wine barrels, too. She worked at Schahinger Cooperage in Adelaide in 1999.
Her vintage gigs read like of 'who's who' of the Californian wine industry – Stag's Leap; Robert Mondavi; Au Bon Climat. Much further south, Semmens was assistant winemaker at Chile's Viña Misiones de Rengo during the 2001 vintage.
For all that, this passionate earth mother is never happier than when she is out-of-doors, among her vines.
The vineyard sits on steep, north-facing, sunlit slopes. Free-draining basaltic and clay-loam soils help make the site one of the most coveted vineyard properties in Tasmania. Industry peers love the place.
The nearby river injects a moderating influence into the vineyard microclimate. Initial plantings on the site in 1980-1981 spanned 4ha, with Chardonnay, Müller-Thurgau, Cabernet Sauvignon and Pinot Noir holding sway.
Subsequent plantings in the 1990s and 2000s expanded the range, bringing the vineyard to 7.8ha under vine. Varieties now include Gewürztraminer, Mavrodaphne, Muscat, Cabernet Franc, Cascade, Merlot, Syrah, Tempranillo and Zinfandel.
Marion's Vineyard is no museum piece, however. Many old vines that passed their 'use by' date and fell victim to trunk diseases have been replaced in recent years. Ageing trellises have also given way to 21st century viticulture.
In 2021 and 2025, Marions' Vineyard was named a finalist in the Young Gun of Wine Vineyard of the Year Awards.
Good wine is all about the vines, Cynthea Semmens will tell you.
Like mother, like daughter.
(See also separate producer profile for Beautiful Isle.)
Key details:
- Marion Semmens: owner/operator
- Nick Semmens: owner/operator
- Cynthea Semmens: owner/vigneron
Vineyard/cellar door address:
335 Deviot Rd, Deviot TAS 7275
Telephone:
+ 61 (0) 491 376 177
Email:
N/A
Website:
www.marionsvineyard.com.au
Tasmanian viticulture takes place within a diverse mix of soil types and microclimates.
Growing conditions in the Tamar Valley fall under the moderating influence of the river itself. Consider: Eversley Vines (MJT 17.7°C; 1065 GDD) and Evenfall (MJT 18.4°C; 1230 GDD). Coolest vs warmest sites.
Vineyard sites on the Australian mainland are far warmer than those in Tasmania.
South Australia's Piccadilly Valley* (MJT 20.4°C; 1730 GDD) and Macedon Ranges* (MJT 19.9°C; 1365 GDD) in Victoria are regarded as the coolest GIs in their respective states.
Climate data* for Deviot Road, 1995-2024:
- Total annual average rainfall: 806mm
- Growing season average rainfall (Oct 1-Apr 30): 373mm
- Average autumn rainfall: 184mm
- Mean January temperature: 18.3°C
- Growing degree-days: 1234GDD
- Average no of hot days (35°C or more) per year: 0
- Average no of cold days (minimum 4°C or less) Sept 1-April 30: 12
*Source: My Climate View, utilising past data from the Bureau of Meteorology and the European Centre for Medium-Range Weather Forecasts. Funded by the Australian Government.
Last page update: January 2026