Hogweed, Heracleum sphondylium, Silhouette of skeleton seedhead against white background.

Hogweed, Heracleum sphondylium, Silhouette of skeleton seedhead against a soft, warm colour glow.

Hogweed, Heracleum sphondylium, Silhouette of skeleton seedhead against a soft, warm colour glow.

Common Hogweed. Heracleum sphondylium, single ragged stem covered with snow at sunset.

Hogweed, Heracleum sphondylium. Drying, skeletal stems of Hogweed silhouetted against pale blue sky.

Hogweed, Heracleum sphondylium.

Hogweed, Heracleum sphondylium.

Hogweed, Heracleum sphondylium.

Hogweed, Heracleum sphondylium.

Hogweed, Heracleum sphondylium, Black subject.

Giant hogweed, Heracleum mantegazzianum. Two plants with branched stems and umbellifer flower heads standing against blue sky.