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Climate Change Spurs Early Blooms In Bulgaria's Historic Rose Industry

By Stoyan Nenov

May 25, 2024 at 11:00:00 AM

A man works in a rose field near the village of Cherganovo, Bulgaria, May 22, 2024. REUTERS/Stoyan Nenov

A man works in a rose field near the village of Cherganovo, Bulgaria, May 22, 2024. REUTERS/Stoyan Nenov

Women work in a rose field near the village of Cherganovo, Bulgaria, May 22, 2024. REUTERS/Stoyan Nenov     TPX IMAGES OF THE DAY

Women work in a rose field near the village of Cherganovo, Bulgaria, May 22, 2024. REUTERS/Stoyan Nenov TPX IMAGES OF THE DAY

Rose petals are pictured on the production line for rose oil at Terra Roza distillery near the village of Sheynovo, Bulgaria, May 22, 2024. REUTERS/Stoyan Nenov

Rose petals are pictured on the production line for rose oil at Terra Roza distillery near the village of Sheynovo, Bulgaria, May 22, 2024. REUTERS/Stoyan Nenov

Workers unload bags with rose petals on the production line for rose oil at Terra Roza distillery near the village of Sheynovo, Bulgaria, May 22, 2024. REUTERS/Stoyan Nenov

Workers unload bags with rose petals on the production line for rose oil at Terra Roza distillery near the village of Sheynovo, Bulgaria, May 22, 2024. REUTERS/Stoyan Nenov

A man works in a rose field near the village of Cherganovo, Bulgaria, May 22, 2024. REUTERS/Stoyan Nenov

A man works in a rose field near the village of Cherganovo, Bulgaria, May 22, 2024. REUTERS/Stoyan Nenov

By Stoyan Nenov

CHERGANOVO, Bulgaria (Reuters) - Bulgarian farmers were busy harvesting rose petals for their renowned oil this week, about a month earlier than the historical norm due to climate change that has ushered in warmer and more humid springs.

Bulgaria, a European Union member country in the southeastern Balkans, is one of the top global producers of fragrant rose oil that is also used in the cosmetics industry.

The best rose oil is produced in its central Rose Valley where, historians say, the flowers have been cultivated as crops since the ancient kingdom of Thrace in the 5th-3rd centuries BC.

The first oil factory was opened in 1820 in the nearby town of Kazanlak.

The process of making the 2 to 3.5 tons of rose oil produced in Bulgaria annually is not easy. For one gram of rose oil, more than 1,000 rose petals must be plucked by hand in the early morning as essential oil content is highest around 7 a.m.

"Condensation forms each evening and clings to the rose, allowing the oil in the blossom to be at its best," said Miroslav Terziev, a rose farmer in the village of Cherganovo.

Petals are also used for products including rose water, rose jam, rose tea and even rose brandy.

The quality of the petals and oil is heavily dependent on weather conditions, with a combination of heat and humidity crucial, said Todor Nikolaev, chief technologist at the Terra Roza distillery.

He noted that with the recent mild winter and a very warm March, the roses began to bloom earlier this year and the picking season started about three weeks ahead of normal.

"The month of May is quite rainy, so the flowers do not bloom all at once, which allows for a good picking of the gardens. Low temperatures prevent the evaporation of oil - the season is favourable for everyone in the production system."

Scientists say climate change over recent decades has caused plants to start blooming weeks earlier than previously.

"We checked our archive from 1987 and found that the active, mass onset of flowering of rosebushes was between June 10 and 20. And we have roses today that start blooming a month earlier," said Valentin Kazandjiev, an agro-meteorologist at the National Institute of Meteorology and Hydrology in Sofia.

Kazandjiev said farmers facing climate change should focus on technologies that mitigate its impact, while scientists should recommend different geographical zones for different crops every decade.

(Reporting by Stoyan Nenov, writing by Aleksandar Vasovic; editing by Mark Heinrich)

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