How wildfires are scorching France’s wine industry

As wildfires razed swaths of Western Europe this summer, wineries in the region have grown increasingly concerned about the fate of one of the area’s most important exports.

In France, Europe’s largest wine exporter by far, some 739,000 hectares (1.8 million acres) of land is dedicated to vineyards that sprawl across wine-making regions such as Languedoc, Bordeaux and the Rhone Valley. So has it...