Invasive Species

Invasive Species

The goal of our invasive species program is to control and prevent non-native, invasive plants from spreading over large areas of critical habitat in the Mattole watershed and adjacent King Range National Conservation Area (KRNCA). In doing so, we assist in the preservation native species biodiversity and functioning ecological communities. We have implemented treatments across 58 high priority sites on 183 acres and continuously re-treat and monitor all project sites as they decrease in size and are eventually under control or eradicated.

Protecting Native Plant Communities

Over the past 10 years the 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 oblong spurge (Euphorbia oblongata). Click on the links above for more information on identification and management of these species found in the Mattole. We encourage the public to help us track the spread of invasive species in our watershed. If you would like to report an invasive species population, please visit our Invasive Species resource page.

Private Contracts

The MRC has a highly trained and insured invasive plant removal crew with the tools and equipment necessary to control and eradicate invasive plants. If you are interested in removing invasive plants on your property, contact Hugh at 707-629-3514, TDD/TTY : (800) 877-8339, or