Willow Yellowing & Black Branches: Water + Check for Insects

4-year willow yellowing, leaf drop, black branch spots = likely underwatering (willows need more water than most trees) + possible scale/aphid honeydew (sooty mold = black).

Action

• Water 1 inch every 4 days × 2 weeks, then weekly (pan method).
• Mulch 3 inches, off trunk.
• If branches sticky: Bayer Advanced soil drench for sucking insects.

Water is the primary fix.