Amsonia tomentosa is a species of flowering plant native to the southwestern United States (S California, S Nevada, Utah, Arizona, New Mexico, W Texas) and northern Mexico (Chihuahua).

[1][2] Its common names include woolly bluestar and gray amsonia.

Amsonia tomentosa is a short, woody plant with many erect stems rarely reaching half a meter in height.

The fruits are podlike follicles that may separate into sections, each bearing a seed.

Among the Zuni people, a compound poultice of the root of the tomentosa variety is applied with much ceremony to rattlesnake bite.