Would recommend wiring in winter if you would get -20f for weeks?
im not recommending anything, just saying what i do, in my micro climate.
i prune, i wire i do all sorts over winter, i slip pot, i repot whatever. im looking forward to seeing my trees without leaves, im looking forward to seeing if what i did over the summer was worthwhile, if my trees have improved, moved forward etc. thats what its all about re deciduous trees at least, you work them over the spring and summer in order to improve the winter image.
its a shame that so many only see winter as a time to tuck everything away, when really one should be appreciating all the work thats been put in.
its also a good time to work conifers, take progression photos, record your work and efforts.
this elm had a slight issue with spidermites, i think it needs repotting but for this tree that will wait until spring, i think the spidermite issue set it back a bit in terms of more ramification. quite a few branches were stripped of leaves at the tips.but its set all its buds for the spring at least. this is an image from last winter when it was last wired....at leaf drop i will look at it again and see if the the insect attack had much impact on the previous winter image, this tree looks best at leaf drop, why would i hide it away
i know for sure that the lower left branch has thickened quite considerably, as it was left to run. in the progression thread one will see how much girth was achieved in one growing season.