Unfortunately, if this is freeze damage, there is not much you can do other than give exceptional care to your plants and hope for the best. A couple of your trees look very bad and I

m not sure if they are salvageable.

I had 19 degrees on May 20th this year and some of my plants got damaged pretty badly. Early and late freezes are the worst for plants.

I was hopping there are some procedures or ways to cut the dead branches and train the remaining to make the tree look good after such an issue.

Remove the dead branches and see if what's left seems worth salvaging, Seems, though, that these species are nopt hardy enough for your area's winters, I'd plant something that is.

The redbud may releader and turn out fine. The Japanese maple is pretty badly damaged, I'd remove that one.

where are you.. big city name ...

when planted.. what are the trees..

if planted in summer last year.. how planted... how cared for .. etc.. ALL PERTINENT HISTORY..

other than showing and describing that they are damaged.. you havent given us anything to work with ..

it is not not some random fungus attacking everything in your yard... simply unheard of.. period.. most likely suggestion by the fungus remedy guy...eh...

you have waited long enough.. all dead material is properly pruned out.. period.. itss a very simple idea.. and of little mystery .. just prune it out...

tree time is counted in decades.. so it might take a few years for your trees to recover.. and in the meantime.. you will have to do some maintenance pruning to shape it ...

but a good par of hand pruners.. and a tree saw ... good tools make jobs easier ... i like felcos ...

all trees releader.. period.. no mystery to it.. the only downside is.. sometimes it creates more than one.. so you prune out extra leaders.. just like the growers who pruned your trees for sale...

now give us the full history... as lane suggest.. i am thinking you dont know what a bad winter is.. and that isnt the issue in any sense.. and winter doesnt cause fungus... so lets go nero wolf on this.. and figure it out... real winter starts where your ground freezes solid for 4 months .. if it doesnt.. it isnt a severe winter.. and its low odds that is the issue ...

if you have any warranties.. exercise them now...

my best guess.. improper planting.. perhaps in the wrong season.. with improper followup care.. including deep watering to maintain truncated roots while a recent transplant regrows lost root mass ... see primer below..

are there any facts to support my supposition????

ken

https://sites.google.com/site/tnarboretum/Home/planting-a-tree-or-shrub

btw.. if that one pic indicates the plant is in the power lines.. the tree should be removed ...

might be a camera pic though ....

ken

The Japanese Maple Tree has been there for years (around 4-5 at least). Unlucky tree, it survived a fence falling on it a few years ago. It never had problems in the winter

The red bud was planted a year ago and it was affected by some improper watering so this one might be my doing .

@Ken -can you comment on the other plants affected (see the pictures)

The plant is not in the power lines that is an internet provider cable (low voltage)

I am in Toronto

Well, the Eunoymus is stone dead. Nothing you can do about it. The pot is infested with Oxalis so don’t tip the soil on your garden.

Oxalis is another problem I am fighting but that is another story.

I asked for comments on the vein of "fungus vs freeze caused issue".

I am not sure if those grasses are prone to the exact fungus that supposedly attacked everything else. I am seeing different plants attacked at the same time so it is either a common fungus or the weather. Now I am not sure how fungus would propagate from one plant to the other (they are in different areas without affecting others in between (ex it skipped the other species of grass or it jumped from the south edge of the property to the patio which is central close to the edge. I also have some climbing roses that I totally forgot to mention (those died back but are relatively fine -the plants are growing like crazy trying to catch up with the roots)

Like Ken, I think the fungus story is a red herring. The Euonymus, being in a container, could have suffered cold damage although it is very hardy. You don’t say how low the temp went. But it could also be a water issue. No way of telling from photos. You asked how to fix them, and for the Euonymus the answer is that you can’t.

The subject line says trees. Euonymous is not a tree so obviously I did not ask how I can fix those and I did not hope that a dead plant can be "fixed"

I could suspect watering gbut I did not water my neighbors tree. That one was affected too.

I do not remember the temperatures but it was like late warm fall for a few days and then it dropped below zero

https://www.blogto.com/city/2021/12/toronto-broke-heat-record/

Yes, the subject line said trees. But you wrote about your 3 Euonymus and included a picture of one. My mistake was to assume that meant you wanted to discuss them.

I would not dismiss the possibility of a fungus. Japanese maple/ Acer palmatum and Cercis / Redbud are reasonably prone to verticillium wilt. If someone showed me the above pictures of the Acer palmatum and Cercis my first guess would be verticillium wilt. Unfortunately, there is little you can do about verticillium wilt. If you prune the dead branches of the Acer and Cercis you should disinfect your pruning tools.

What tree do we see in the first picture?

What kind of grass do we see in the last picture?

don't know the exact answer to any of those

The tree is not mine but it is some Canadian species of evergreen which I have seen in my trips in Ontario

The grasses were bought long time ago and we propagated them for years (what you see there originated from one small pot of each) they looked very good before they died, you could not see the horrible fence which I am waiting for my neighbor to agree so we can replace it ("the wood is too expensive this year")