Perennial herbaceous plant, 40-150 cm high. The stem is erect, violet-purple. The leaves are dark green.
The inflorescence is long, consisting of 10-16 flowers. Corolla 15-20 mm long, pink or purple.
The fruit is a nut with hairs on the top.
Blooms in May-August. The fruits ripen in July-August.
It will be good in a mixborder, border, group, will be an excellent tapeworm on the lawn in natural-style gardens, and will decorate the south side of a house or fence.