In article ,
Stephen writes:
|
| Do these plants die down then and have to be regrown from scratch, or
| do they continue to grow into a small bush or tree?

Effectively, the former. While they are strictly perennials, the
success rate of people overwintering them in the UK is not great.
Sow them as annuals, early, in the warmth.


Regards,
Nick Maclaren.