community watershed restoration since 1983

Invasive Species


Protecting Native Plant Communities

Our invasive species program goal is to control and prevent non-native invasive plant species from infesting large areas of critical habitat in the Mattole watershed and adjacent King Range National Conservation Area (KRNCA), with a vision of preserving the natural beauty, native species communities, and ecological function of the area. We have implemented treatment across 58 high priority sites on 183 acres, and to continue re-treatments and monitoring until all project sites are decreasing and/or eradicated.NicksTansy

Over the past 10 years the Mattole Restoration Council (MRC) has completed numerous projects throughout the watershed and KRNCA that focus on high priority invasive species such as Japanese knotweed (Fallopia japonica), French broom (Genista monspessulana), Scotch broom (Cytisus scoparius), tansy ragwort (Senecio jacobaea), Cape ivy (Delairea odorata), English ivy (Hedera helix), malta starthistle (Centaurea melitensis), pampas grass (Cortaderia jubata), European beachgrass (Ammophila arenaria) and the newly discovered, oblong spurge (Euphorbia oblongata). Click on the links above for more information on identification and management of invasive species found in the Mattole.

Private Contracts

The MRC has a highly trained invasive plant removal crew and the tools and equipment necessary to control and eradicate invasive plants. If you are interested in removing invasive plants on your property, contact Lisa at 707-629-3514 or

If you would like to report an invasive species population, please visit our Invasive Species resource page.