The plants are tall, usually annual herbs, reaching a height of 2-4 m, unbranched or with only a few side branches.

Cow Parsnip is a tall herb, reaching to heights of over two meters.

They are tall herbs having coarse leaves, and large flowers in dense spikes.

This plant is a rhizomatous perennial herb up to 2 meters tall.

This is an erect perennial herb 30 to 40 centimeters tall.

It is an erect perennial herb up to 80 centimeters tall.

He looked at me, and it was as if some tall herb had opened eyes and shown a human face.

It is a tall, perennial herb with villous stems.

Then three to six years later, tall herbs take over (centre).

It is a densely hairy perennial herb 40 to 80 centimeters tall.