Pruning advice for most ornamental trees indicates that it's best to do so in late-winter - for us, that would be around February/March. The problem is, the last thing I'm thinking about at that point in time is pruning so I either end up doing a bit of tree maintenance at the wrong time of year or it doesn't get done at all.
This type of thing happens all the time - I look at a plant in the garden and think "I want to prune / divide / move that plant next winter / spring / fall, and then I completely forget. This year I decided to start a monthly list of things that need get done the following year, which includes pruning trees that require a bit of tidying up in late winter.
There are a couple of trees on our property, however, that do best when pruned in early to mid-summer: Maple and birch. The fact that maples "bleed" if injured in early spring (maple syrup!) didn't even occur to me until just this week. Sort of a 'duh!' moment 😉. This, of course prompted me to do a bit more research which lead me to find out that maintenance on birch trees was also best done during the summer. So both of these trees were removed from my winter list & added to my July list. And since we are still in July, I tackled the maple trees that have been a right pain (literally) for years now.
|Mowing underneath the maples was not easy|