Yes Bluebell I have. Although sold as perennial, and it can survive, I have had only small subsequent harvests (2 & 3 years old), and as you say the plants look rather dispirited.
I would resow, just time for that, or sow purple sprouting, or white sprouting.
Annuals are not that difficult and the trade off for having certain perennials is how they can hang around looking a bit unhappy.
