(Geranium pratense ‘Striatum’) Hardy Perennial ‘Splish Splash’ is an impressive form of an old-fashioned garden favorite. Often known as ‘Cranesbill,’ these hardy Eurasian natives yield brilliant mauve-blue stars all summer. It’s a fabulous addition to wild or cottage gardens, perennial beds and rock gardens. Each five-petaled white flower is dappled in a one-of-a-kind pattern of stripes and speckles in rich blue. The large, deeply lobed leaves turn brilliant red in autumn for a final flourish.