I'm just crazy about digitalis species, and this rare variety is one of my favorites. Digitalis 'Gelber Herold' blooms in mid summer with towering spikes of soft, tan-yellow flowers with rusty veining. The flowers are larger than the species.
Digitalis ferruginea is a biennial or short-lived perennial. Also known as Yellow Herold or Rusty Foxglove. Hardy in zones 4-9.