Tammar Gully Wines are produced from selected fruit from the Dickinson Estate Vineyard. The Blackwood Valley Wine Region is situated on the same latitude as Margaret River and shares many of the same basic climatic characteristics. Most notable of these are wet and relatively cool winters and proportionately warm, dry summers. The points of difference stem from the more Continental climate and a slightly higher summer temperature range than that of Margaret River. The soils are part of the Darling Plateau system, with moderately incised valleys providing gravel and gravelly soils on the divides and yellow soils and red earths on valley slopes. Overall, the result is well-drained, gravelly loam soils perfectly suited to viticulture.