Diagnosis
Diagnose: Butterfly Bush Winter Dieback
Follow these steps to identify and confirm the problem.
- Cold damage to above-ground wood (winter dieback)
- Begin at the crown, not at the cane tips. Firm tissue, swelling basal buds, or new shoots mean the root crown survived even when every exposed stem is brittle. On questionable canes, make a shallow scratch from the tip downward and stop where moist green tissue or swelling buds begin.