| Long time since the post, with no answer. I'm just browsing other region forums, but I'll leave an answer in case anyone else is curious. Flowering Quince can take a bit of a "beating". Now, it blooms the following year on what was the new growth of the previous year. So cutting ends off in winter is not good. Let it bloom, then prune. I have a table on my site, but can't put the link on this forum. If you type a search on my user name written the way you think it should be written without the dash marks, look for my site URL and pick the pruning page - scroll down. | 
