The yellow flower usually refers to the day lily, which is a kind of vegetable widely planted in China and a specialty in many places. The origin and the largest planting base of day lily are mainly concentrated in Hunan and Henan provinces of China. Shaodong County, Hunan Province is known as the "hometown of yellow flowers", and the day lily here enjoys a high reputation in the country for its high-quality taste and nutritional value. Shaodong County, located in the middle of Hunan Province, belongs to subtropical zone, with mild climate and abundant rainfall, and light and soil conditions are very suitable for the growth of day lily.

Huaiyang County, Henan Province is also an important producing area of day lily, and the day lily here is loved by people for its unique flavor and nutritional value. The unique flavor of day lily in Huaiyang benefits from unique natural conditions, soil conditions and cultivation conditions.

Huaiyang Daylily Quxian, Sichuan Province is also known as "the hometown of yellow flowers in China". The yellow flowers in Quxian county are famous for their bright colors, unique taste, rich aroma and fleshy flower heads. Daylily is mainly distributed in Hunan, Henan and Sichuan in China.