These are robust herbaceous perennials with large leaves and spikes of yellow or orange daisy-like flowers. Most grow in damp places. They originate mainly in Asia, with a few in Europe, and some American plants that were known as Senecio have also been included in the genus.
Ligularia 'The Rocket' is the rocket indeed, with tapered, tall black spikes covered in dark yellow daisy-like flowers. The architectural large leaves are a nice dark green and deeply toothed.