"Iris McCanna" wrote
"JennyC" wrote
"Paul" wrote
I wonder if anyone can help? A friend of mine has a Bottlebrush,
Callistemon citrinus. It has started shedding some leaves, and
other leaves are turning yellow. Paul

Cold/frost is the problem. You need to bring them in during winter!
Jenny

Jenny,

I have two of them and they survived minus 12 last winter so I don't
think cold/frost is actually the problem, more being moved about to
and from differing temperatures. Personally I would plant it out in
the spring and let it settle down.
Regards
Iris (McCanna)

OH ! Mine died last winter in -12 :~(((
Jenny