 | Ames St. John’s Wort. The Ames St. John's Wort (Hypericum kalmianum 'Ames') often commonly called Kalm St. John's Wort, is a native evergreen shrub or sub-shrub with upright branching and lovely green foliage. Ames typically grows in a dense, tall mound 2-3 feet in height and width. It is a neatly rounded garden shrub with dazzling golden yellow flowers in mid-summer. Ames is slightly harder than other species and has a more uniform shape and those brilliant yellow starry blossoms attract loads of butterflies and local... - Ames St. John’s Wort. |