Anthurium Blotchy Brown Spots: Environmental Injury, Not Disease

The Symptom

One of two Anthuriums (same care) developed blotchy brown leaf spots a week ago.

Diagnosis

Spots resemble environmental injury—too much direct sun, cold/hot draft, temperature shock. Not infectious.

Detective Work

• Check for recent exposure to intense sun, heater, AC vent.
• Move to bright indirect light.
• Spots won’t spread if cause removed.