Hartenberg is nestled in a valley on the free-draining, north-eastern slopes of the Bottelary Hills. Vineyards face north,west, and east, with varietals planted to take advantage of either morning or afternoon sun. There is a difference in altitude of some 250 meters between the northern and southern vineyards. Hartenberg Estate is renowend for Shiraz. Each vineyard and bunch of grapes is hand-selected and picked before dawn to ensure no flavours are lost in the heat of the day.