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Other invasive plants are Japanese knotweed, giant hogweed, clematis, field bindweed, creeping buttercup, reed canary grass, policeman's helmet and herb Robert. Almost all of the invasive plants were originally introduced as landscaping plants that escaped into the natural environment.
Please see the Non-native invasive plants page.
Our mature trees will gradually disappear with no new young trees to replace them because ivy suppresses the sprouting of seedlings!
If you have property that is currently undeveloped, is steeply sloped, contains a ravine, stream, creek or wetland, or other sensitive elements, contact City Hall at 425-744-6279 for more information and what process may apply before proceeding with any work. EarthCorps webpage.