Land Plants - invasive

Shining Geranium (Geranium lucidum) on Jun 25, 2008

Submitter has sample

Description of specimen

thick understory of false brome and shining geranium under once pristine oak woodland canopy. Weeds currently suppressing growth of once 100% native wildflowers, including Fritillaria affinis, a rare and beautiful native lily.

Commentary

Hi there. I would like to know what the follow up to this report will be.

Also, please list SHINING GERANIUM,Geranium lucidum. It is a major threat to native oak woodlands all over the region, and it seems to be evading the awareness of experts. Thank you, M.

Reporter
June 25, 2008, 4:46 a.m.

Hi Molly,

Thanks for using the hotline to report false brome and shining geranium. I will forward this report to Pat French Park Planner at Willamalane Parks and Rec because I know she is concerned about weed issues. I’ll also forward your report to the Lane SWCD. I suspect that successful control of these plants is this site will require reaching out to the private land owners and encouraging them (and maybe even helping them) to control the weeds on their lands.

Thanks again for using the hotline. This is a good way to bring attention to the issue of invasive species.

Sincerely,

Tania Siemens
OSU Sea Grant/The Nature Conservancy
tania.siemens@oregonstate.edu

Tania Siemens
June 25, 2008, 5:13 a.m.

Remedy

How to control shiny geranium, from WA noxious weed control board: Individual plants and small infestations can easily be controlled by carefully hand-pulling, bagging, and putting in the trash. Make sure to remove its fibrous roots to prevent resprouting. Larger populations can be covered with sheet mulch - ideally overlapping pieces of cardboard covered with a thick layer of woodchips. Make sure to repeatedly monitor and control seedlings before they set seed.

Location

both false brome and shining geranium on both sides of the road next to the water resevoir, as well as throughout the lands adjoining, the entire top of 'QUARRY BUTTE' and down into the oak woodlands to the south, including parts of Dorris Ranch Park, at the end of south 2nd street. Mix of private and county and city lands.

Expert Reviewer

Tania Siemens
WISE Program Coordinator (Watershed and Invasive Species Education)
Oregon Sea Grant Extension
Oregon State University
tania.siemens@oregonstate.edu
541-914-0701

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