was originally Folksglove as the flowers resemble the fingers of a glove.Foxglove contains cardiac stimulants, the most familiar being Digitoxin. It is extremely poisonous and should not be used internally.
So just enjoy these wonderful plants. They come in all colors and Digitalis grandiflora, the big-flowered foxglove, is a brilliant yellow. The above picture is Digitalis mertonensis, or Strawberry Foxglove, which is a cross of Digital purpurea and Digitalis grandiflora that I am enjoying in my garden this year.