Star of Billions Masterwort

Star of Billions is a masterwort with airy clusters of white flowers and white bracts tipped green. Its upright stems rise above a rounded basal clump of deeply divided leaves, creating a bright, star-like display in a moist border or woodland-style planting. ## Flowers and Garden Use The cultivar is sold as ‘Star of Billions’ by nurseries and is listed under that name by Chicago Botanic Garden. A historical patent describes the closely matching denomination ‘Star of Billion’ as a white-flowered Astrantia hybrid with green-tipped bracts and a long late-spring-to-summer bloom. Chicago Botanic Garden records flowering from late June until frost and notes visits from bees and butterflies. ## Siting and Size Grow in full sun or partial shade. Provide evenly moist, humus-rich soil and water during establishment and dry spells. It suits mixed borders, woodland edges, and cottage gardens. The existing compact size is consistent with cultivar listings, though width estimates vary. ## Maintenance Water deeply while the root system establishes, then during prolonged dry periods. Remove fading flower stems if a tidier appearance is wanted. [Chicago Botanic Garden](https://www.chicagobotanic.org/plant-information/plant-finder/astrantia-major-star-billion-star-billion-astrantia) · [Horsford Gardens and Nursery](https://horsfordnursery.com/astrantia-major-star-of-billions/) · [U.S. plant patent PP20,352](https://patents.justia.com/patent/PP20352)