Why an Indoor Citrus Tree Drops Fruit and Leaves in Winter

An ornamental orange tree in Ohio (room at 63°F) had 8‑10 fruit shrivel and leaves drop after doing well last winter.

Most Likely: Overwatering

Constant moisture prevents roots from “breathing” (CO₂ in, O₂ out) → root rot → fruit drop.

Correction

• Water less volume; empty drain tray 1 hour after watering (turkey baster works).
• Do not water again until soil has been dry for several days.
• Use bamboo skewer test: insert to bottom, pull out; water only when lower 2/3 is dry (may take 4–5 weeks).
• Underwatering is far safer than overwatering.