Astragalus is an herbaceous perennial, growing between 25 and 40 centimeters in height. It grows in grassy regions and on mountainsides, requiring plenty of exposure to the sun. When grown for cultivation, the plants are traditionally harvested after four or five years, with the roots collected in spring or fall. The roots are dried in the sun and then sliced for distribution. The slices are yellow in color and have a sweet, moistening taste with a firm, fibrous texture.

Most authorities on TCM recommend taking 9-15 grams (3 to 5 tablespoons) of the whole herb per day as a decoction, made by boiling the ground, dried root in water for a few minutes and then brewing the tea. It may also be taken in capsule or extract form. Astragalus is widely used in TCM for a variety of ailments and functions. It is traditionally valued for supporting healthy immune function and has been observed to support the heart in healthy subjects. Other common names include membranous milkvetch and huang qi.