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Bull Thistle:


Thistle outgrows other native plants,

large animals can't eat them,

and pollinators won't go to other native plants.

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.


Shannon Collins from Phoenix Conservancy

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