Wangchou Yang walked through his outdoor garden booth at the Hmongtown Marketplace on St. Paul's Como Avenue, gently touching leaves and stems.
He plucked a stem from a small plant, rubbed it between his fingers and inhaled its aroma. The stem, steeped into a tea, can help with stomach issues, he said. Bending slowly, he took a leaf from a different plant and rubbed it on his opposite hand. This one, he said, helps with skin irritation.
For the past 20 years, Yang and his family have built a reputation in the Hmong community for their vast collection of medicinal plants — to treat ailments like high blood pressure, headaches, fever and rashes — that they sell at their farmers market booth business, Hmong Specialty Plants & Herbs.
Knowledge of such plants has traditionally been a guarded secret in Hmong culture, a rare expertise that elders could charge $1,000 to share.
To the Yangs, that gatekeeping of the information has led to young Hmong people not knowing the history behind the medicinal plants.
With the input of 29-year-old daughter Tang Yang, the family is modernizing its sales approach. Once only a face-to-face service, the Yangs now sell their products online and ship them, enabling the family to reach a wider audience of consumers interested in the multibillion-dollar market for plant extracts and herbal medicines.
Tang Yang also has been documenting her family's inventory and building a database of each plant's use so the knowledge is not lost.
"There were only a few who knew," she said. "And what will happen is they never share this information with anyone, and they will die and just take this knowledge with them to the grave."