
Flowering dogwood is a forest understory tree that got planted in full-sun subdivision lawns, and most of what looks like disease is really site failure. The classic central Indiana call is "it bloomed beautifully for eight years and now half of it is dead," and the cause is usually mower and trimmer damage at the base, compacted clay, and no afternoon shade rather than any single pathogen.
Small tree · $100–$700 typical
Also searched as dogwood, white dogwood, pink dogwood, Cherokee Chief dogwood, Cornus florida.