It holds the river banks together to prevent erosion, but it takes over which means native plants don’t have a place to grow.  Conservationists have given up trying to get rid of it, they only want to stop it from spreading.  

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Our 6th and 7th grade class has been trying to answer the question of whether we should preserve the Palouse Prairie that has 99.9% disappeared.  One of our case studies involved native and invasive plant species and their current role in the Prairie ecosystem.

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Source

Clare Peine from Palouse Conservation District

https://www.nwcb.wa.gov/weeds/reed-canarygrass

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