But the villagers' race against the sun to pick the moist, pink flowers that produce the oil is becoming more urgent as they say climate change is making the valley hotter and drier.
"Roses like cold nights, dew in the morning and hot days in spring," said Nedko Nedkov, who runs a research institute on roses and rose oil in Kazanlak. [...] "But now, there is not enough dew, sometimes there is none. The roses are becoming too thin."
— From Bulgarian Valley Turns From Guns to Roses in the New York Times.