Pinguicula esseriana Leaf Notching: Low Light, Not Pests

Irregular leaf notching on your P. esseriana—no insects visible. Grown on south windowsill with 2–3 hours direct sun, 55% humidity, mineral mix, top-watered every 5–6 days.

Cause: Insufficient Light

P. esseriana is one of the more succulent Mexican butterworts—it wants near-full sun. Your light level is too low, causing abnormal leaf development (notching). Compare to a well-grown specimen: compact, succulent, colorful leaves.

Fix

• Move to unobstructed west or south window (half-day direct sun).
• Expect some tip burn on old leaves—trim them.
• New growth will be normal.
• Water slightly more in brighter light (higher transpiration).

Notching itself isn't harmful, but it signals the plant isn't getting the energy it needs. More light = better form, color, and dew production.