Valerian

Valeriana officianalis. Valerian is a favored herbal treatment for insomnia and the small, pink and white flowers were once used in perfumes. Considered a powerful brain and muscle sedative, valerian can have varying effects on people, even stimulating some. Please do your own research before using/consuming plants. Perennial. Plants can grow to 5′ tall and spread slowly via rhizomes.
 
Photo and description: Adaptive Seeds