RevegetationPlant materials do modify soil moisture by removing water from the soils through the root network. Root networks of both woody plants and herbaceous ground covers help stabilize slopes against shallow landsliding and surface erosion. Techniques use native plan species and are widely accepted. Refer to the Ecology online documents Slope Stabilization and Erosion Control Using Vegetation and Vegetation Management for additional information. Limitations:Soil types and moisture conditions must be appropriate for
each species selected. Native plant materials are inconsistently
available in different areas. Twice a year Hortus Northwest
publishes a directory of suppliers of native plant materials
such as seed mixes, bare root stock, cuttings, container plants,
etc. (see links section for more
information). Advantages:Plants also strengthen surface soils. Aesthetics. Techniques
conducive to many slope configurations. Does not require heavy
construction practices and associated slope disturbances. Can be
used with other drainage control techniques. Disadvantages:Installation should be done in late fall or early spring. Requires a relatively long time on the slope to perform installation of container plants.
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