Nepenthes Not Pitchering Indoors: Light Distance and UV

Move Plants Closer to the Window; Check for UV‑Blocking Glass

Two Nepenthes (Miranda and Lady Pauline × spatulata) 2 feet from a SW window get insufficient light. Light intensity drops exponentially with distance.

Fixes

• Place within 3–4 inches of the glass.
• If windows are modern low‑E/UV‑blocking, the plants lack UVB needed for pitcher formation. A T5 HO fixture is better.
• Miranda’s leaves should show slight red if light is adequate.

Fertilizer

Switch from monthly coffee to ¼‑tsp/gallon orchid fertilizer as a foliar spray every 2 weeks. Coffee results are inconsistent.

Stability matters—don’t keep moving them.