Travis wrote:

My Kwanza flowering cherry has what I think is blossom end rot and has for
the two years since I've had it. I don't think there is no cure but what
treatments might minimize it?

Thanks

Travis, the two most common ornamental cherry ailments in our climate are
bacterial canker or brown rot. For both conditions, dormant season spraying
with copper sulfate may help control. It is also recommended that you prune
out affected areas, going back far enough to ensure you are cutting into clean
wood. Sterilize your pruners after each cut.

HTH
pam - gardengal