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Banlangen: The Chinese medicine that is also used for tie-dye

Tie-dye might invoke images of the 1960s, hippies, and Woodstock, but what about the Bai people of southwestern China?

For more than 1,500 years, this ethnic group in Yunnan province has been dyeing their clothes blue using the leaves of a plant locally called banlangen (板蓝根).

In the West, it is more commonly known as woad, or Asp of Jerusalem.

The story goes that Bai farmers discovered the plant’s dyeing capabilities when their clothes were stained blue by its leaves.

“Then they figured out it could be used to dye their clothes,” says Zhang Jianyi, a tie-dye instructor in Dali, Yunnan.

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Banlangen is harvested in the summer, around July and August. The leaves are left to ferment for a few months before being turned into a blue dye.

Zhang’s parents taught her how to tie-dye when she was growing up.

“We do not consider tie-dyeing a profession,” she says. “From when we were young, our parents did it, so we slowly learned how to do it too.”

Banlangen is not only used to make dye. The plant’s roots and leaves are ingredients in traditional Chinese medicine.

“We might take a few leaves and make tea,” says Zhang, who drinks it as a flu remedy.

Banlangen made headlines last year, when a prominent doctor in China suggested it might be effective against the Covid-19 coronavirus.

Shares of a traditional Chinese medicine maker that sold banlangen soared 10 per cent after the endorsement.

This article was originally published on Goldthread. Follow Goldthread on Facebook, YouTube and Instagram for more stories about Chinese culture.

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Update: 2024-04-22