1、 Different plants

Ageratum is an annual herb with a height of 50 to 100 cm, but a few plants will be less than 10 cm. There is no obvious main root and the stem is relatively strong

Patchouli is a perennial herb. Its stem is relatively upright, with a height of 50 to 150 cm. The upper part has extremely short fine hairs and the lower part is hairless

2、 Different blades

The leaves of Ageratum spicatum are opposite, and the upper part may have alternate leaves. The shape of the leaves is oval or oblong

Patchouli leaves are about 4.5 to 11 cm long and 3 to 6.5 cm wide. There are relatively thick toothed cracks at the edge of the leaves, almost no distribution of small hairs, and the petiole is about 1.5 to 3.5 cm long

3、 Different flowers

The flowers of Ageratum thistle are generally arranged closely, and a few have loose corymbose style, and the pedicel is about 0.5 to 1.5 cm long

The inflorescence of patchouli is a cylindrical spike, about 2.5 to 12 cm long, and the pedicel is very short, usually about 3 mm