Horticultural Corn Meal: Source & Skepticism

Horticultural corn meal available at Marshall Grain (marshallgrain.com, fungicides section). But caveat emptor.

Efficacy Concerns

• Many "all-natural" pest products fail controlled testing
• Corn gluten meal (crabgrass preventer) shows no control in trials — yet sold everywhere
• No peer-reviewed data found for horticultural corn meal as fungicide

Better Strategy

Plant disease-resistant varieties — genetic resistance beats spray-and-pray. Organics often don't deliver; money saved funds better plants.

Open to Evidence

If you have controlled trial data showing horticultural corn meal efficacy, share source. Reliable organic pest control would be revolutionary.