Pinguicula moctezumae Decline: Aphids, Dormancy, or Watering?

Grower's P. moctezumae dying (one already lost). Recent aphid infestation on sundews/butterworts; pyrethrin and submersion didn't eradicate. Pot shared with dormant P. laueana and moranensis, so watering reduced. Asks if moctezumae has dry dormancy.

Expert Analysis

Jacob Farin: P. moctezumae is very aphid-prone; severe infestation stunts growth. Pyrethrin is topical—needs repeat every 7-10 days. Systemic insecticide works better. Aphids are ongoing; treat as seen.

Other factors: possibly dormancy (prefers very dry soil when dormant), or nutrient lack (wrong time to fertilize). Without light/water details, can't specify.

Follow-Up: Distinguishing Dormancy vs Illness

When dormant, moctezumae has much shorter leaves at base. If no short leaves, plant is ill. Photo would help. Spray for aphids regardless of visibility; systemic works regardless.

Good Growing!

Jacob Farin