Haselgrove operates in McLaren Vale, the warm, maritime-influenced subregion of South Australia's Fleurieu Peninsula. The winery focuses on Grenache and Shiraz, varieties that thrive in the region's Mediterranean climate and gravelly soils. Vine Sean Grenache and Grenache Rosé, both made from Grenache, represent the winery's commitment to the variety—each rated 93.0 by prestige critics including Wine Spectator and Wine Advocate. The H.R.S. Reserve Shiraz, a structured expression of the region's signature dark fruit character, earned a 89.7 prestige rating. McLaren Vale's warm days and cool nights produce wines of ripe intensity balanced by natural acidity, a profile evident across Haselgrove's portfolio.