Xref: kermit rec.gardens.edible:71673

I have an Ouillons Golden Gage plum tree that is around 5 years old and
stands around 3.5 metres high by 3 metres spread. I checked before buying
and it is self-fertile though I do have a Victoria plum nearby. It has
never fruited or blossomed yet always looks healthy so is anybody able to
help suggest as to why please?

Thanks
Dave