08 Oct Like this Value of Valerian Amelia Hoskins / Floral / 8. October 2020 / 0 Comments Valerian flower is delightful and prolific on walls, its preferred habitat. Known for thousands of years as a medicinal calmer and is mentioned in Hippocrates journals. Valerian likes walls. Dartmouth. Valerian (Valeriana officinalis) root and rhizome are used; see ingredients often for sleep inducement, a natural source of 'valium'.