Mauve (H2) flowers, VIII–IX; grey-green, velvety foliage; vigorous, upright; height 31–45cm; spread 61–75cm.
Seedling found at Darthuizer Boomkwekerijen (Leersum, Netherlands); introduced by Darthuizer Boomkwekerijen in 1973.
Plants from Darthuizer Boomkwekerijen have names beginning with Dart’s; silver and rocket refer to the colour and habit of the foliage.