Linda Kline owns Bumble Bee Botanicals, which sells kratom in five upscale shops throughout the West, including this one in San Francisco. All her products are lab tested to ensure purity, Kline says.

Linda Kline owns Bumble Bee Botanicals, which sells kratom in five upscale shops throughout the West, including this one in San Francisco. All her products are lab tested to ensure purity, Kline says.