Having read up on pruning for the new fruit tree, I decided my cherry 'Summer Sun' was well overdue for a trim to encourage sideways growth which is more likely to bear fruit. It had one very upright leader which seemed to be heading for orbit. I have just sawed it off, and found that it was over 5 feet from the fork to tip! The tree now has a rather artificial looking flattened profile, but with a bit of luck it will even out with a season or so's growth.
I have dressed the soil around the trees, and my raised beds, and the greenhouse bed, with that mysterious and rather sacrificial-sounding substance, Fish, Blood and Bone.