House-Sitting Lemon Tree Crisis: Sooty Mold, Insects, and Weed Competition

Emergency Situation

Jeanie house-sitting: lemon trees with color-changing leaves, leaf drop, dying fruit, black substance on branches, small plants growing in pots.

Immediate Triage

1. Wash off black: Ivory/Joy dish soap + water — sooty mold removes easily
2. Black = sooty mold on honeydew from sucking insects
3. Upgrade to insecticidal soap or Neem Oil (Dyna-Gro) — organic, non-washing, lasting protection

Secondary Issues

• Leaf/fruit drop: May be underwatering OR normal pre-bloom inner leaf shed
• Small plants in pots: Weeds — pull them out (competition for water/nutrients)

Watering Check

Ensure adequate moisture without waterlogging. Citrus need consistent soil moisture during fruit development.