"Stewart Robert Hinsley" wrote in message
...
I've been trying to grow Pentapetes phoenicea (Scarlet Mallow) as a
half-hardy annual with year, without success - the plants are still only a
few inches high. So, it becomes an attempt to grow them as half-hardy
biennials.

Any advice as to how they may be successfully overwintered?
--
Stewart Robert Hinsley

no