One of my Kousa Dogwood trees just turned completely brown (see photos). I presume it is dead or nearly so. For my edification - what do you think happened? Is there anything i should do to prevent same for the other kousa dogwood? Can i replant a new dogwood (or maybe a regular old flowering dogwood vs kousa) in its place? Background: The trees were planted about 5 or 6 years ago. Both are at the edge of wooded tree line (mainly oaks, a few gums, etc) where they get some (maybe couple hours) afternoon/ late afternoon sun. The trees do get water (irrigation system) -- but i don't overwater. I use pine straw mulch in the garden bed and there are other shrubs/ perennials in the same garden area. The trees have never been spectacular; and last year i noticed a few branches on each tree lost all its leaves (maybe had anthracnose but i am not sure). This year both trees did bloom and leaf out and had buds. So i thought they were recovering. Then suddenly in early July (seems like it happened the week i was on vacation ) the one tree just turned brown. In the second photo, i noticed that a few of the leaves of the willow oak behind/ above the tree also have some brown leaves-- is that a coincidence? Any insight you can provide will be most appreciated.