Assessing Nepenthes × ‘Caesarion’ Health in a Terrarium

A grower’s Nepenthes × ‘Caesarion’ (purchased Sept 2014) showed yellowing and browning on older leaves despite steady pitcher production. Conditions: 9″ under Sunblaze 24 HO LED (12 hr), day 70–73°F / night 51–53°F, humidity 80–98%.

Plant Is Healthy; Adjust Nights and Light

Older leaf senescence is normal. However, nights are too cool for this intermediate hybrid—aim for upper 60s °F. The yellowing also suggests very high light; raise the fixture 1–2 inches. Combined cool nights and intense light can cause this coloration, which also occurs in nature. Strong pitcher production indicates overall happiness.