[header] How to use hydrogen peroxide in the garden [title] Clean pots and tools. [step] Spray or wipe a 6%-9% peroxide solution on to pots or tools you are reusing. You can also dip tools into the solution while you're pruning plants. 
This can disinfect these items and reduce the risk of contamination from other plants or pathogens. [substeps] Look for pharmaceutical or food-grade peroxide.