That's great!
Are you sure it's Italian, ..looks a bit like a Mt. Royal, that would explain the hardiness, it's the hardiest Euro prune plum, semi freestone, take a good look at the pit, post a picture when cut in half.

Mt royal is some form of the European prune.

These I got are "early Italian " prunus domestica rated zone 5.
"Mt royal" prunus domestics rated zone 3 ??

I've always wondered how they got such a different rating. There is no way they messed these up that bad. Mt royal is a fairly rare variety compared to early Italian also. I doubt Home Depot would even ever get mt royal.

Well around here more people for sure have the Mount Royal.
I've never heard of many others on this forum around these parts having Italian.
That fruit is long shape my camera angle kills it.
I will post picture of the inside of the fruit once I pick it.
They are a very late plum .i know an older guy who has four of them about two and half hours south of me and we never picked them till around late September. In fernie area to be precise. He also grew sweet cherries these were all big trees until he sold the place.

OK..this camera angle can be misleading.
Fernie is zone 5a,..this will be a challenge for you, some years they will freeze back...same as my Greengage.

Matt,
see how the Italian Prune, [long] looks like.
Click on it to zoom in.

Here is a link that might be useful: Italian Prune Plum

This is a German prune called Auenbacher, close to Italian, a little smaller, freestone, still on the tree, my best prune plum.

Well I tasted Italian plum today. Here's a few good pics Konrad. It's not at all round free stone and a prune exactly like Italian variety I get from bc.

Here's another

Great..lets hope she puts on a good crop next year.

My Auerbacher,..[spelled wrong above] picked yesterday, it was a nice treat.

Those look like some form of the prunus dometica almost same as the Italians. Italian will survive for you and me if your able to grow those very similar plums. I'm going to sprout the seeds also hopefully create a hardier version. I self pollinated mine with a brush and its own pollen.

No need to pollinate, these are self fruitful,..big advantage growing European plums.

Oh, to dream!!!! some day, some day, yummy, Cheryl

This is where it starts...dreams do come true.

Got mine from Costco two years ago. what the label said is Mt Royal. The best tasting plums from my garden.

Those are some impressive results Matt. My own trees only put out between 1-2 plums each for their 3rd summer. I have a feeling it will take a few more years before they bear in any quantity.

Beautiful plums. Do you have honey bees doing the pollination?

I am so grateful for the hard work the bees do in spring time to get things off to a good start. We live a fair way off the beaten path, but they find our plum and apples blossoms every time. It's always amazing.

Does anyone have problems with sapsuckers?

We have a great deal of trouble with these birds. They drill small, shallow holes, in neat little rows, around the branches and trunk of our fruit trees. I noticed the plums have sharp pointed spurs which seem to provide a small degree of natural protection.

These Euro plums don't need pollination,..self fruitful.

Yes, Sapsuckers are here,..kind of lucky that they're mostly in
native trees like...birch, willows, chokecherries, evergreens and
Saskatoon. Have a lock next time when a major limb on the Saskatoon or willow dies back..most likely damaged by yellow bellied sapsucker.

Does anybody else have these late italian plum trees? Mine are just starting to open now.mt royal was done flowering this week.

Looks as if I juiced my trees a bit to much they grew like crazy last year but I did not harden them off and seeing the results. At least they are now fairly fat trunks I've pruned them right down I suspect next year will be good if I do it right this summer.