Verbascums are related to foxgloves — in fact, they are part of the same family and the resemblance is clear. Unusually for wild plants, both of them are garden-worthy, often finding their own way into gardens.
Just like foxglove, the verbascums form a rosette of large, broad leaves and in late spring and early summer, send up a strong, upright, tall flower stem. The verbascum flower-heads have branches, while the foxglove rarely does. Verbascum carries as many flowers on a single large branching stem as the foxglove does on its multiple stems.