Patterson Clark

For Patterson Clark's latest contributions to The Japan Times, see below:

Spread of toxic invasive plant alarms U.S. forest authorities

/ Jun 13, 2013

Spread of toxic invasive plant alarms U.S. forest authorities

Beware the giant hogweed. Named after the Roman hero Hercules, Heracleum mantegazzianum captures attention with its impressive foliage: huge, sharply lobed leaves; hollow, hairy, purple-splotched stems, four inches in diameter; and towering umbrella-shaped white flowers that bloom in late spring. But an informed person will resist ...