Any idea what's going on with one of my burning bush? The leaves came out very small and curled this spring. I see no signs of bugs on the leaves. The burning bush right next to it looks healthy. Here are a couple pictures...

Burning Bush is considered invasive in Maine. It pops up everywhere with shrubs your size.

so much polwheelock, that was very informative.

As for Scottree, I take it that the leaves to the right in the first picture are the healthy ones. Has there been any major digging in the area? Any fertilizing? It seems as though something is affecting the roots, unless there was a heavy aphid infestation in the spring.