|I have a multiple trunk Red Bud (approx) 5 years old.
Overnight all the leaves on the main trunk died. No apparent lighting hit. Other branches still have their leaves.
|Sorry to hear this. Without inspecting the tree its hard to tell why this happened. Because it is sudden, I would inspect the base of the trunk to see if there was any damage or decay. Sometimes multi-trunk trees hinder their own growth because of a bad network of stems at the base where they may be competing for space, rubbing up against one another and causing a limb to deteriorate over time. I would prune out the dead limb and and any branches to make room for new growth. Pruning usually results in lots of new growth, so you should see a dramatic increase in healthy new leaves and stems. If the tree does not respond well to pruning (wait until next summer before making a judgement), then you can remove it and replace it with something else. Redbuds are such attractive trees that I think it's worth the effort. Best wishes with your landscape!|