Astilbe 'Delft Lace'

'Delft Lace' is a clump-forming rhizomatous perennial with finely toothed, deeply divided, dark blue-green , silvery in spring, purple /burgundy flushed lacy leaves and fine red stems bearing tall upright, relatively open plumes of pale feathery apricot pink flowers with accents of dark salmon pink buds from July to September, summer into autumn