Long-lived and easy to grow the epimediums are  superb plants for the shady garden. 

The more vigorous varieties, such as Epimedium x versicolor ‘Sulphureum’    or Epimedium perralchicum 'Frohnleiten', make good ground cover. The delicate, but abundant, flowers are worthy of close inspection, and good foliage extends the interest,many providing superb autumn colour. Like with so many plants, collection can become an addiction.