Pinguicula primuliflora Decline: Fungus Gnat Larvae Suspected

A nursery open-house purchase of P. primuliflora declined rapidly – leaves browned, flower died. Grown near south window with CFL, moist but not standing water.

Diagnosis: Fungus Gnat Larvae

Rapid flower collapse + leaf loss suggests root feeding by fungus gnat larvae. Common in home collections; moist CP soil attracts adults.

Confirmation & Treatment

• Check soil with magnification for tiny worms.
• Spray soil and plant with pyrethrin-based insecticide.
• Systemic (imidacloprid) also works.
• Treat all nearby plants – larvae spread.

Follow-Up

Grower found one mite, treated with neem. Advised to treat entire collection – adults feed sundews, but larvae eat roots.

Rescue Option

If one rosette looks healthy, separate and restart.