In mid-July Cosio d'Arroscia gives a day to mountain herbs and to lavender, gathered on the slopes of the upper Arroscia valley for as long as anyone can remember. The Pro Loco and the town council set out stalls, tastings and workshops along the village streets.
The festival is on the Liguria Region's Eventi Autentici Liguri list, the register of Pro Loco events with at least ten years behind them: the 2025 edition was the twentieth, and it falls on the third Sunday of July.
