Commonly known as thistle, thistle. Because all leaves have thorns, they are called thistles.

Pogostemon Pogostemon, also known as Muskmelon, belongs to the genus Panicum, with a plant of about 30-70 cm, upright stems, dense hairs all over the plant, inverted heart-shaped leaves, serrated edges, alternate or opposite flowers and purple or pink flowers.

You can see that these two kinds of leaves are different, but you can't see them clearly in the picture. The leaves of Cirsium japonicum have thorns on the long edge, and the leaves of Agastaches are inverted heart-shaped with serrated edges.

I feel more like purple thistle.