• Olympic: Three Parks in One

    Olympic

    National Park Washington

There are park alerts in effect.
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  • Spruce Railroad Trail Closed from Lyre River Trailhead to Devil’s Punchbowl

    The trail will be closed for improvements from the Lyre River TH to approximately 0.25 miles east of Devil’s Punchbowl. Work is expected to be completed by the end of October. The remainder of the trail will be accessible from the Camp David Jr. Road TH. More »

  • Safety Advisory: Mountain Goats

    NPS has received reports of aggressive mountain goats near trails at Hurricane Ridge, Royal Basin, Seven Lakes Basin, Lake of the Angeles, & Grand Pass. Visitors are required to maintain a distance of at least 50 yards from all wildlife. More »

Herb Robert

Herb Robert

Herb Robert has five-petaled flowers and reddish stems.

NPS Exotic Plant Management Team

Geranium robertianum

This low-growing geranium species is also called “stinky Bob” for its unmistakeable and unpleasant smell.

Identification:

Herb Robert is a low-growing (up to ten inches high), herbaceous species. The stems are often dark red and covered with white hairs. Its leaves are made up of three to five leaflets that are long-stemmed and deeply dissected. Flowers are purple, pink, or white with five petals and found from early spring to fall.

How is it spreading and where?

Herb Robert was introduced from Eurasia and northern Africa. It easily spreads into undisturbed areas and is shade tolerant. It spreads by seeds that are sticky and are launched explosively.

In Olympic National Park, it has spread and established itself in several lowland areas.

 
Herb Robert

Herb Robert's dissected leaves
have a feathery look.

NPS Exotic Plant Management Team

Control in Olympic:

Herb Robert is hand-pulled and dug out for smaller populations.

For more information, see Weed Resources.

Back to Invasive Plants

Did You Know?

marmot

Although related to other marmots and groundhogs of North America, the Olympic marmot is unique. An endemic species, it is found only in the Olympic Mountains. Visitors to the high country of Olympic National Park may be lucky enough to encounter a marmot sunning itself near its burrow.