It was said "Stop pruning it. ... they bloom on old wood" Well, sort of "old" wood. They bloom on last year's wood. So, the key to a full crown of bloom each year -- ignoring possible nasty weather events -- is to prune every year right after the bloom is gone. If you wait until later in the year, you will remove the buds that set beginnng in July/August. The new wood that grows this year will support next year's flowers. Don't give it a "bowl cut" which removes only the ends of the branches. But go all the way into the crown. It's likely you can find instructions & images with an online search.

Perhaps I should have said "container", rather than "pot". Either word, your tree is growing on a NYC roof, and not in an actual meadow. That you are able to keep other, putatively more sensitive, trees thriving is great. As you may have gathered from the number of recent posts about cherry trees, weeping or otherwise, many people have difficulties with them. It may be that something damaged the bark, and sap wept out and solidified, and there is no disease involved. It is possible that your tree acquired a borer - does it look like the sap solidified from a small hole? It is possible that your tree does not have gummosis - all you can do at this point is wait and see. Keep an eye on it, and if there looks to be something else wrong, then post again. That the soil was sterile when you planted implies that if your tree has gummosis, then it came from the nursery - I don't know the incubation period well enough to say for sure. But, I am sure your trees are visited by birds and insects, so one of them could also have brought some disease in on feet, feathers or through droppings.

you might want to tell it whether it is on a standard .... or post a pic your guidance is at the link.. pick which one you like.. and go at the thing ... or post us back a link to the pic you like.. and we can help .. but listen to me.. PRUNING DOES 'NOT' HURT A PLANT... so just get that out of your head ... it lives in your world.. teach it a lesson ... ken Here is a link that might be useful: link

Thanks for updating, Andy. I planted my tree last fall and it has done well until the last few months. The leaves are falling off, look like they have been eaten, and the buds that are on the branches are dried up. So, I’m hoping, after reading all the posts, that this is normal, it’s growing a great root system, and not to be concerned. Here’s hoping!!