• Olympic: Three Parks in One

    Olympic

    National Park Washington

There are park alerts in effect.
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  • Madison Falls Trail Closed for Repairs Beginning July 7

    The one-tenth mile Madison Falls Trail and trailhead parking lot located in Elwha Valley will close to public entry beginning on Monday, July 7 while crews make improvements and repairs.

  • Hurricane Ridge Road Closed to Vehicles Sunday 8/3 (6:00a - noon)

    Due to the "Ride the Hurricane" bicycle event, the road to Hurricane Ridge will be closed above the Heart o' the Hills entrance station from 6:00a to noon on Sunday August 3rd.

  • Spruce Railroad Trail Improvements to Begin August 5

    Spruce Railroad Trail will be closed 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 »

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?

Mt. Olympus in winter

That Mount Olympus receives over 200 inches of precipitation each year and most of that falls as snow? At 7,980 feet, Mount Olympus is the highest peak in Olympic National Park and has the third largest glacial system in the contiguous U.S.