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White Crust on Venus Flytrap Traps: Likely Perlite Dust

Harmless Mineral Residue

Hard white crust on new trap backs of rescued flytraps in 1:1 peat/perlite. Likely perlite dust—brittle, forms after rain. Wipe with damp cloth or spray off. Not harmful. If persists after cleaning, submit clearer photo.

Carnivorous Plants: Reddish Growth on Storm-Damaged Oak Branches: What Is It?; Identifying Fungal Growth on a Tree Trunk; Troubleshooting Pinguicula primuliflora Decline in Southern California; Diagnosing Abnormal Pitcher Growth in Nepenthes hamata: Likely Thrips Infestation; Floppy Sarracenia Pitchers: Not Enough Light; Rescuing a Venus Flytrap from a Death Cube: Acclimation Guide; Venus Flytrap Division After Crown Rot: Multiple Growth Points Explained; Stunted Flytrap After Dormancy: Rhizome Recovery; Venus Flytrap Flowering: Normal Growth or Cause for Concern?; Unidentified Fungal Growth on Lawn: Could Be Insect Egg Mass

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