Diagnosing Brown Spots on Clivia Leaves: Scale, Cold Damage, or Watering Issues

Multiple Possible Causes

Brown spots on Clivia leaf undersides can stem from several issues. The key is observation:

1. Scale Insects

If spots are slightly raised and wipe off with firm rubbing, it's scale. Treat with the 5:1 water:alcohol + soap spray, ensuring coverage in leaf axils.

2. Spray Damage

Wet leaves exposed to direct sun or temperatures below 55 °F (13 °C) can develop necrotic spots. Always spray in shade, during mild temps.

3. Cold Exposure

Clivia moved indoors after cool nights may show stress. Keep above 50 °F (10 °C).

4. Light Change

Transition from intense outdoor light to dim indoor conditions causes leaf yellowing. Place in brightest possible indoor spot.

5. Overwatering in Fall/Winter

Clivia needs a dry rest period (Oct–Jan) to flower. Water sparingly; let soil dry deeply.

Action Plan

Assess which factor matches your situation. Treat scale if present; adjust watering and light; avoid spraying in poor conditions.