I repot all my deciduous trees in spring, during the period when buds are swelling through to when they are just starting to pop. Maples (trident and Japanese), hornbeams,
sweetgum, elms, zelkova, others I'm not even listing. Have only lost one tree after repotting - a Japanese maple I had acquired the previous fall that may well have been
infected before I got it. I also almost lost a larch that I moved into the sun too soon after repotting.
You are doing something wrong if your deciduous trees aren't strong enough to survive a spring repotting. Figure out what it is!
This is such a difficult subject to tackle via internet.
Sucks because I am so eager to really figure this out, but how to explain.....
I know for a fact that winter alone has never killed any of my trees.
I also know that spring repotting alone has never killed any of my trees.
I know that spring repotting after a winter kills my trees.
That's where I get stuck, since Spring comes after winter, I can't avoid winter, and I can't NEVER repot, so I'm exploring Summer repot, as my "Answer" or "solution". Since repotting directly after winter is the problem.
You know how you can never have enough "controls" for experiments cuz all your real data comes from there....blah blah. ....
Well all my "controls"...which is just everything else I have observed to be true and repeated/repeatable "my garden" info,
Says summer repotting is an easy/more possible fix than attempting to "play God" and stop winter.
Whereas being determined to repot in spring means going against so many things that are true in my Garden...making my life way more difficult, just to say I repot in spring like everyone else.
It just happens to be that I haven't had the 2 and 2 to make a 4 yet, for one reason or another since 2016. 2017 was the year I was still too exposed, so in February, things woke up and ended up dying so I played it safer with what lived.
You really have to live in this "fuckzone" to understand it....and I Don't mean Leo's farther North, or THG's a bit South....
Or just west beyond the "hand of the lake effect"....
My winter will have picked up and moved or otherwise destroyed that one fellers moldy hotbox before it even got moldy......this year.
Since winter started in October this year and only lasted till just before xmas ish....It's been Rather spring like and rainy since...
Till a couple days ago when winter began again....but it probly won't last.....
"I Don't dance unless I hear music and I refuse to be intimidated by this winter, that's just how it is!" -Coach Boon! Lol!
Anyway...I won't change the system. It's working just fine for Juniper, Spruce, Boxwood, and enough random S to keep me Nuttin up a tree or 4!
If I "can't keep deciduous trees" I'm ok with that.
But this whole....you can't kill an elm becomes..........BS! Lol!
2 to the 0 to the 1 Niner!
Sorce