Environmental & Community Biology 1h

Invasive Aliens

Hogweed

Native hogweed (Heracleum sphondylium), about 1 metre tall

Giant hogweed (Heracleum mantegazzianum), about 2 metres tall, with Pentland Hills behind

Leaves of giant hogweed

Seed head of giant hogweed

Close-up of giant hogweed stem, showing the irritating hairs (which also cover the leaves)