Astrantia major 'Star of Billions' - Horsford Gardens and Nursery
Masterwort - FineGardening
Astrantia major 'Claret' (Great Masterwort)
Astrantia major 'Ruby Cloud', Great Masterwort – Dancing Oaks Nursery and Gardens
Amazon.com : CHUXAY GARDEN Astrantia Major Rosea,Great Masterwort 45 Seeds Hardy Perennial Lovely Flowers Easy Grow Bloom Late Spring to Early Summer Great for Garden : Patio, Lawn & Garden