The Swartland name originates from a description of the indigenous "renosterbos" or rhino bush, which appears to turn black, ("Swart" in Afrikaans), during the summer months. This hot, dry climate has an average temperature range of 25°C to 35°C and an annual rainfall of 450 mm and 600mm, but the altitude of these vineyards creates a cool oasis in this arid landscape. Minimal intervention and environmentally friendly farming practices are paramount. Sowing cover crops between the vines provides protection from the winter rains and also maintains the valuable mineral content, nutrients and moisture during the hot summers. 80% of the vineyards are small bush vines with an average yield of six tonnes per hectare; the quality of fruit is exceptional. The soil types vary, but Malmesbury Shale dominates, with small patches of granite and Table Mountain sandstone.
Granite Rocks is a Chenin Blanc, Chardonnay, Viognier and Roussanne blend. The 100% Swartland region grapes were harvested at each of their optimal ripeness levels. The skins, pips and stems were removed and the juice was fermented at controlled temperatures of 13°C to14°C, with aromatic yeast strains. After the fermentation, the wine was stabilised, filtered and bottled to preserve the freshness.