1、 Rhizome difference

The rhizome of Acorus tatarinowii is about 2-5mm thick and has a faint aroma. Its color is light brown. The rhizome is fleshy, with many fibrous roots on it. The length of internodes is usually 3-5mm

The rhizome of Acorus calamus is horizontal, with a thickness of about 5-10mm. It also has fragrance, but it is yellowish brown. Its fleshy roots are about 5-6cm, and its fibrous roots are hairy

2、 Leaf difference

The leaves of Acorus tatarinowii are very thin and linear. The length is about 20-30cm, sometimes up to 50cm. Its leaf color is dark green and has no middle rib

The leaves of Acorus calamus are sword shaped linear, and the length will be longer, about 90-150cm. Its leaves are green, very bright and have very obvious middle ribs

3、 Habit difference

Acorus tatarinowii likes to grow in a semi shady environment. It is afraid of being directly irradiated by the sun and likes a humid environment

Acorus calamus also likes to grow in wet places. It likes to be warm. The frontal warmth of the environment should be about 20-25 ℃