Rose petals in containers are seen at a factory that makes flower pastries, in Kunming, Yunnan province, China May 7, 2018. Pastries made from edible rose are popular in the Chinese southwestern province of Yunnan, where flower plantations are plenty. The factory processes some 30 tonnes of edible roses per year, a manager working there said.

Workers work on dough for rose pastries at a factory that makes flower pastries, in Kunming, Yunnan province, China May 7, 2018. Pastries made from edible rose are popular in the Chinese southwestern province of Yunnan, where flower plantations are plenty. The factory processes some 30 tonnes of edible roses per year, a manager working there said. Picture taken May 7, 2018.

A worker sorts rose petals at a factory that makes flower pastries, in Kunming, Yunnan province, China May 7, 2018. Pastries made from edible rose are popular in the Chinese southwestern province of Yunnan, where flower plantations are plenty. The factory processes some 30 tonnes of edible roses per year, a manager working there said. Image used for illustrative purpose.

A woman gathers rose petals at a rose plantation in Anning, Yunnan province, China May 5, 2018. Pastries made from edible rose are popular in the Chinese southwestern province of Yunnan, where flower plantations are plenty. REUTERS/Wong Campion

A worker holds a tray of rose pastries at a factory that makes flower pastries, in Kunming, Yunnan province, China May 7, 2018. Pastries made from edible rose are popular in the Chinese southwestern province of Yunnan, where flower plantations are plenty. The factory processes some 30 tonnes of edible roses per year, a manager working there said. Picture taken May 7, 2018.

A man carries a sack of rose petals at a rose plantation in Anning, Yunnan province, China May 5, 2018. Pastries made from edible rose are popular in the Chinese southwestern province of Yunnan, where flower plantations are plenty. Picture taken May 5, 2018.

Women gather rose petals at a rose plantation in Anning, Yunnan province, China May 5, 2018. Pastries made from edible rose are popular in the Chinese southwestern province of Yunnan, where flower plantations are plenty. Picture taken May 5, 2018.

A worker rolls dough for rose pastries at a factory that makes flower pastries, in Kunming, Yunnan province, China May 7, 2018. Pastries made from edible rose are popular in the Chinese southwestern province of Yunnan, where flower plantations are plenty. The factory processes some 30 tonnes of edible roses per year, a manager working there said.

A woman gathers rose petals at a rose plantation in Anning, Yunnan province, China May 5, 2018. Pastries made from edible rose are popular in the Chinese southwestern province of Yunnan, where flower plantations are plenty.