Culley produces wines in Marlborough, the South Island region that has become synonymous with vibrant Sauvignon Blanc. The winery's Sauvignon Blanc expresses the varietal's signature aromatic intensity and crisp acidity, while its Riesling demonstrates the region's capacity for elegant, mineral-driven white wines. Both wines have been assessed by major critics including Wine Spectator, Wine Advocate, Decanter, Wine Enthusiast, and Falstaff, reflecting their standing within the New Zealand wine landscape. Marlborough's cool climate and distinctive terroir shape these expressions, yielding whites of precision and character.