In 2012, a new attraction was added to the garden; Scandinavia where native plants threaten by extinction are shown and protected. The year after another botanical hotspot was open, Kaukasus, with plants from an expedition there 2011.
The plants of the Rock Garden are arranged according to their geographical origin in a larger context.
In "Europe" gentians, edelweiss, alpine dwarf cherries (Prunus prostata), saxifrages, "alpine Poppy" (Papaver alpinum) and broom flourish. Many of these plants are suitable for your own garden.
"Asia" is divided into different parts to give optimum conditions for the delicate specimens. The Baikal pasque flower (Pulsatilla patens) needs sunlight and warmth, while a cooler and more humid environment is necessary if the sky blue flowers of the Himalayan Meconopsis are to open.
"America" is also laid out according to the climatic variations of that continent. Wood lilies (Trillium), dog's tooth violet (Erythronium) and snowdrop trees (Halesia) are happiest in the shade. In sunnier parts, Spanish dagger (Yucca), lewisia, penstemon, phlox, alum root (Heuchera) and hardy cacti grow. The pitcher plant (Sarracenia), an insect-eating plant, dwells in a small bog area. The flowers of many American species are bright orange, which in their native habitats attracts hummingbirds that pollinate these plants.