Tung Bua Tong is a place in Mae Hong Son in Northwestern Thailand where wild Mexican sunflowers grow. Known as doi bua tong in Thai, or Bua Tong flower, the sunflowers were originally brought by missionaries and have since spread over much of Northern Thailand. They are especially prevalent along the sides of the roads, making for beautiful drives through the countryside. The drive is not for the faint of heart as many of the roads are very steep, narrow, windy, and often in poor shape. They bloom from about October to December, and are en masse around Tung Bua Tong.