Genshin Impact : Silk Flower

To find Silk Flower, you must explore the region of Liyue, as this is a Liyue Local Specialty. Silk Flower can be located in two locations; the first is Yujing Terrace in Liyue Harbor. The second is outside the Wangshu Inn. The Silk Flower can be purchased from the boss of the Wangshu Inn, Verr Goldet. It's possible to buy five Silk Flowers at 1000 Mora apiece, and the stocks refresh every two days. Verr Goldet's location can be seen below.

You can also buy Silk Flowers from Ms. Bai, an NPC who lives in Qingce Village. Ms. Bai has five in stock for 1000 Mora apiece. The shop's stocks refresh every three days. Ms. Bai's location can be seen below. Local Specialties respawn every two days after looting them; however, this is based on the time you harvested them, not the server reset time. The two images below show where you can find Silk Flower in Liyue. Click on the images to enlarge.

Thanks to Map Genie Genshin Impact Interactive Map!