Adenostyles alliariae can reach a height of 40–70 centimetres (16–28 in). The inflorescence consists of dense corymbs hold by hairy peduncles. The small heads are usually composed of 3 to 4 flowers. The receptacle (the part that collects and maintains individual flowers) is naked or hairless. The flowers are of a tubular type and hermaphroditic. The corolla is cylindrical and pink violet. The length of the flower is of 7–8 mm. The period of flowering is from June until August.
Adenostyles alliariae can reach a height of 40–70 centimetres (16–28 in). The inflorescence consists of dense corymbs hold by hairy peduncles. The small heads are usually composed of 3 to 4 flowers. The receptacle (the part that collects and maintains individual flowers) is naked or hairless.