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 ...