late bloomer concerns

I have a couple of trees that I'm concerned about.
Most all of mine are leafed out now with the exception of a few.
One, a collected winged elm that's been in its container a little more than a year, budded out but then just stopped.
The other one is a Trident maple that is acting the same way.
We did have some up and down temperatures but I don't know why some are affected and some weren't.
I included a couple of pictures and as you can see there is life under the buds, but I'm not sure how I should proceed.

Hello Chris. Doesn't look good. Thats the tree you collected with Neil D isn't it? What is your soil mix?

Same its been in since the day we dug it up Will.
Mostly haydite and pine bark as I recall along with some of the original soil from where we collected it.

As the medium is fairly lose, have you thought to see if there are any white tipped roots? They shouldn't be too far from the surface if I know Elms.

No I haven't Will. And if I do?
And I'm pretty sure you know elms.

If you have a light rake through the soil and find white tipped roots then you know it's ok but I can't hazzard a guess as to what has caused this slow start. If you don't have any root movement then its probably on the way out.
Have you spoken to Neil Dellinger about this tree?

Not yet, was hopin he'd respond here as well as yourself.
Thanks

How about using Superthrive? Has anyone had good results with this? I understand that prodyuct helps in these scenarios.

So a few days later, here's what the Trident looks like.
Glad I never gave up.

See what even the mention of Superthrive can do??

Chris,
This has been a crazy spring in IL which has had an effect on my trees as well. I have a few of the same species that are miles apart in their emergence from dormancy. One of my Amur maples has been leafed out for almost a month now while another has just begun to open buds. I'm glad that your patience has paid off with the trident and it is showing some life. I've got my fingers crossed for a couple of my trees as well.

Todd

John Quinn wrote:See what even the mention of Superthrive can do??

Good one John

I have some problems aswell this spring, trees very late in leaf, accents that are late or dead.
I think here in Europe it was to wet, and changing temp. from one day 22c and sun, next day 12c and rain.
Weather is strange the last couple of years.

WE ARE DAMNED, THIS IS THE END

Peter