Sundew Fungus Treatment: Fungicide Choices and Cultural Prevention

Grower lost D. capensis to white mold, needs fungicide from Lowe's/Home Depot (neem vs sulfur, brand names).

Immediate Treatment

• Sulfur-based (no copper) – effective.
• Neem – reported effective, less nursery experience.
• Captan, Cleary 3336, Domain – grower-recommended.

Cultural Prevention (Critical)

• Media: not pure peat – add sand/perlite for drainage.
• Water: moist, not wet. Thorough watering, then dry to barely moist.
• Drainage: pots must drain; don't sit in water constantly (esp. small pots).
• Air flow: no terrariums; fresh air prevents spore buildup.
• Flush media occasionally with fresh water.
• Cool/cold temps → even drier media.

Personal Note

Author rarely needs fungicide – catches issues early via culture. Chemicals for acute cases only.

Anti-Fungus Rules

1. 5:3:2 peat:sand:perlite.
2. Grow moist, not wet.
3. Max air flow.
4. Fresh water, regular flushing.
5. Dormancy = drier.