I have a Montana Broughton Star planted in an old milk churn which is approx 3 feet tall and 1 foot wide. I planted it last spring against a pergola, it flowered and put on a lot growth right up until late September.
There is currently no sign of any new growth and it looks just like a mass of bare twigs.
Is it possible that being in a metal churn, it has become frost damaged?
Should I be more patient in view of the constant temperature variations, I live in the north of England?
Any thoughts and advice would be welcombed, thanks in advance.