Sulfur Fungicide for Seeds: Application Rates and Methods

Grower has Bonide 90% sulfur powder (1 tsp/gal for fruit trees). Asked rate for Drosera intermedia seeds, powder vs. spray, handling fine dust.

Methods

• Dusting: Pinch powder between fingers, sprinkle over seeds.
• Coating: Place seeds + powder in small bowl, swirl to coat, then sow.
• Spray: Mix per label, shake vigorously and often during application.

Rate

Label rate (1 tsp/gal) is fine. No need to reduce for seeds.

Sulfur inhibits mold—critical for cold, moist stratification.