Citrus Cold Damage vs. Light Acclimation: Two Diagnoses for Leaf Drop

Two experts, two perspectives on the same Clementine orange leaf drop:

Diagnosis A: Light Acclimation (Will Creed)

• Outdoor → indoor light drop = leaf shed.
• Fix: max sun, reduce water, prune, wait.
• Tree recovers; new growth in weeks.

Diagnosis B: Cold Damage (Darlene)

• Left out too long; temps <45°F caused injury.
• Fix: water more, move to all-day sun, wait for regrowth.
• If frosted, may not recover.

Synthesis & Action

Both factors likely contribute. Do both:

1. Place in brightest possible indoor spot (south/west window + grow light).
2. Water when top ¼ dry—don't overcorrect to "more water" if soil stays wet.
3. Check for frost damage: scrape bark on leafless stems. Green = alive; brown = dead.
4. Prune dead wood to green tissue.
5. Patience. Citrus is resilient if roots survive.

If stems are green under bark, it will recover. If brown/brittle to base, replace with a hardier dwarf citrus.