Reapplying Fungicide to Sundews and Butterworts: Timing and Safety

A grower treated Drosera aliciae with neem for fungus, saw improvement, and asked about reapplication, treating a neighboring Pinguicula moranensis preventatively, and timing relative to repotting.

Neem vs. Sulfur

• Neem oil – Good for active infections; safe to reapply if needed.
• Sulfur – Better for ongoing prevention.

Repotting and Treatment Timing

• Repotting soon? Spray preventatively at repotting time.
• Delay in repotting? Treat immediately – early intervention is critical.
• Late-stage fungal infections can be fatal; don't wait.

Precautions

Both plants can be treated similarly. Neem is gentle on carnivorous plants when used as directed. Always test on a small area first if unsure.