Shibui
Imperial Masterpiece
Cumbria is a fair way north. How cold can you expect it to get?
Unless it gets really cold there i would not go overboard with protection. In many cases people are too conservative and then you have problems reacclimating the trees to proper growing conditions next spring.
you have not mentioned which pines you have. There are plenty of growers repotting pines after mid summer now but that gives time for roots to grow before real cold sets in. Over here I can root prune my JBP from mid winter with no problem. JBP seems to be a little active all winter for us and seems to respond to winter fertilisation. I'd expect Scots pine to be even more resilient so probably repotting now will be better than leaving them.
Unless it gets really cold there i would not go overboard with protection. In many cases people are too conservative and then you have problems reacclimating the trees to proper growing conditions next spring.
you have not mentioned which pines you have. There are plenty of growers repotting pines after mid summer now but that gives time for roots to grow before real cold sets in. Over here I can root prune my JBP from mid winter with no problem. JBP seems to be a little active all winter for us and seems to respond to winter fertilisation. I'd expect Scots pine to be even more resilient so probably repotting now will be better than leaving them.