Douglas hawthorns are native in the region where I live (though not common in my immediate area). Their fruit ripens black. Hawthorns are sometimes challenging to identify to species level so mix ups are not unusual, but in this case the fruit are quite clearly something else.
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So I checked Leaf Snap and it actually says it’s Fireberry Hawthorn, actually that’s the second result but the only one cold hardy enough for Moscow, the first was Frosted Hawthorn and might actually be cold hardy enough, being cold hardy down to - 20 F.
So I have found what these must be.
Arnold Hawthorn!
Highly recommend!
Almost like giant blueberries with big seeds in autumn!
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I have had Orcas Euro Pear on Hawthorn for about 10 years. It produces like gangbusters every year. I am going to try to put it on something else, because you all keep saying it’s incompatible, but it disagrees.
John S
PDX OR
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I had Hosui on a Hawthorn with Old Home interstem for maybe 10 years. It was extremely low vigor. It was pretty neglected in the parking strip with well draining hardpan and little soil. Inadequate water and nitrogen, but it also took me a long time to learn that Asian pears require vigorous root stock.
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