Incandescent "Grow Bulb" Burning Nepenthes—Switch to Fluorescent

Aaron uses a 75W incandescent "spot-gro" bulb 8 inches above a N. × 'Deroose Alata' for 14 hours. Pitcher tops blacken and curl on the light side, though the plant is growing vigorously. He asks if it's natural aging or light burn.

Overall setup showing incandescent bulb

Incandescent Bulbs Are Unsuitable

Jeff Dallas: "I can see that you definitely have one of those incandescent grow bulbs. They are too hot and not bright enough where it counts. Switch over to the largest compact fluorescent you can find that will fit in your fixture. If possible, a 'Daylight' type will provide a better spectrum since it is your primary light source."

Better Yet: Shop Light Fixture

• Two-tube 48" T8 shop light.
• Use 40W cool white tubes (e.g., Sylvania Cool White Plus).
• Energy-saver tubes are too dim.
• Easy to hang on a shelf; accommodates multiple plants.

The blackened pitcher tips are heat damage from the incandescent bulb. Fluorescent light runs cool and provides usable spectrum.