Climate change threatens Europe’s prized white truffle harvest

Months of heat and drought have raised concerns about the future of the white truffle, a fungus dependent on cool, moist soils and a symbiotic relationship with tree roots. Antonio Degiacomi, president of Italy’s National Centre for Truffle Studies, noted that October’s conditions were impacted by earlier heat and lack of rain, resulting in poor production and shorter truffle shelf life. He also stated that dry, compacted soils have led to smaller truffles this season.

The International White Truffle Fair, a significant food event in Italy, opened on October 10th and continues until December 6th. Despite a slow start due to a hot, dry summer, recent rains have improved conditions, allowing for larger specimens to emerge. Axel Iberti, president of the fair, reported that demand remains high, driving prices up by 20% to 30% compared to last year, and leading to near-full bookings for accommodations.

The concerns extend beyond the current year’s harvest. Degiacomi cited a trend of hotter summers and erratic rainfall patterns spanning five to six years. Marolo, a seasoned hunter, acknowledged the inherent uncertainty of the hunt, stating, “You certainly come home empty-handed more often than you do with a truffle.”

The challenges are not limited to Italy. Similar issues are impacting truffle-producing regions across Europe. In Croatia, truffle hunter Petar Alebic says years of drought have made finding the prized fungi increasingly difficult. “Each year for the past seven or eight years has been worse than the last,” Alebic said. He estimates this year’s harvest is 30% below normal and now supplements his income with truffle-hunting tours.

Armin Mesic, a mycologist at the Rudjer Boskovic Institute in Croatia, confirmed these findings, noting that drought, lack of rainfall, and high temperatures significantly impact both the quantity and quality of truffles. He added that the geographical area where white truffles grow is shrinking; these truffles can fetch as much as 4,000 euros ($4,500) per kilogram.

Experts in Piedmont are exploring solutions, including improved forest management and experimental irrigation. Degiacomi emphasizes that they are “trying to do what nature does, and do it artificially.” Iberti has expanded the fair’s focus to include environmental education and conservation efforts, with communities creating new public truffle grounds and planting trees.

Researchers are also investigating soil microorganisms and tree varieties suited to hotter, drier conditions. While cultivating white truffles remains challenging, efforts to restore and protect forests are underway, with reforestation expected to take over a decade to become fully effective. The enduring partnership between hunters, dogs, and forests continues, as evidenced by Stella’s recent discovery of a truffle.

Whether future generations will experience similar moments depends on a combination of scientific research, conservation efforts, and adapting to a changing climate. Zampano reported from Rome.