Masterworts (Astrantia)

Astrantia is a genus of clump-forming herbaceous perennials grown for summer pincushion-like flowerheads and divided foliage. The flowers have a compact center surrounded by showy bracts, and colors vary among species and selections. ## Form and seasonal interest The [RHS Astrantia guide](https://www.rhs.org.uk/plants/astrantia) describes summer-flowering plants with white-green, pink or maroon flowers on 30–90 cm stems above clumps of lobed foliage. It recommends fertile, freely draining soil and sun or light shade, with watering during hot, dry weather. The [University of Wisconsin–Madison Extension guide](https://hort.extension.wisc.edu/articles/astrantia-astrantia-major/) describes Astrantia as a member of Apiaceae, notes that plants bloom through summer and attract bees, flies and beetles, and recommends moist, fertile soil in part shade. Since this record represents the genus, flowering and mature dimensions vary by species and cultivar. ## Siting Use Astrantia in perennial borders, cottage gardens or woodland edges where its small detailed flowers can be appreciated. Provide part shade and soil that stays evenly moist; full shade can reduce flowering, and dry soil can stress plants. The genus includes plants suited to cut-flower arrangements. ## Maintenance Remove fading flower stems to encourage continued bloom. Cut back spent foliage and stems in fall, or leave them standing for seasonal interest; divide established clumps when they become crowded.