Collio is a crescent-shaped sub region of Friuli-Venezia Giulia that hugs right up against the Slovenian border. It is perfectly situated for growing wine grapes, especially of the white variety.

The Julian Alps to Collio’s north allow the influx of cool, nighttime breezes, while the Adriatic Sea to its south regulates the region’s temperatures. The area contains flysch soils,locally known as, ponca, a layered, sedimentary rock that formed millions of years ago as continents collided under the sea. Today the flysch soils that dominate the hills of Collio provide an interesting substrate for vine roots, with measurable mineral variations within small areas. The fractured layers of flysch soils also facilitate drainage and deepening of vine roots.

The region boasts a unique set of indigenous white varieties including Friulano, Ribolla Gialla, Malvasia and the rare, Picolit. International whites—Pinot Grigio, Pinot Bianco, Sauvignon (Blanc) and Chardonnay—have also been in the area for well over 100 years. Today Collio is often associated with crisp, clean, floral and fruity whites. But in recent years, there has been a resurgence in popularity of the ancient Slovenian style of fermenting white grapes on their skins. This process retains additonal colors and phenols, producing a complex finished wine with an orange hue, warranting the term, "orange wines."

Reds are far less common but the indigenous Pignolo makes an age-worthy red, and the international varieties Merlot and Cabernet grow here as well.