Cyclic Yellowing in Cephalotus: Heat Stress, Light Intensity, and Terrarium Conditions

Diagnosing the Cycle

Repeated yellowing of new pitchers suggests environmental stress. In a terrarium under CFLs, check:

• Temperature: High temps + bright light = sun-bleaching.
• Light distance: CFLs too close can overheat leaves.
• Airflow: Stagnant air exacerbates heat buildup.

Action Steps

Measure terrarium temp. Raise lights if needed. Increase ventilation. Ensure the medium drains well (sandy mix). Repot if soil is suspect.