Vermilion Forks Field Naturalists are hosting a seminar on restoring grasslands in the face of invasive species at the Princeton Museum with a special guest. Wendy Gardner, professor in the Natural Resource Science Program at Thompson Rivers University (TRU), will be presenting some of her case studies on spotted knapweed, an invasive plant that she has been researching for years. “Just going to try and showcase some of the complexities, but als…