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### 🍄 **4. Fungal Disease Fighter**
Powdery mildew, leaf spot, and other fungal issues don’t stand a chance against hydrogen peroxide’s antifungal properties.
**How to use:**
Spray a **1:3 solution of 3% hydrogen peroxide and water** onto affected leaves every few days until the issue subsides. Avoid using during the hottest part of the day to prevent sunburn on leaves.
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### 🌾 **5. Soil Sterilizer**
Planning to reuse pots or start a new garden bed? Hydrogen peroxide can sanitize soil and containers, eliminating harmful microbes.
**How to use:**
Use a **1:1 mixture of hydrogen peroxide and water** to disinfect tools, pots, and trays. For soil, lightly drench with a diluted solution (1 tablespoon per gallon of water) to reduce pathogens before planting.
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### 🌸 **6. Promotes Aeration in Soil**
Hydrogen peroxide breaks down into oxygen and water, which can help improve **soil aeration**—especially in compacted or overwatered areas.
**Bonus tip:** Add hydrogen peroxide to water before irrigating compacted or clay-heavy soils to help deliver oxygen deep into the root zone.
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### ⚠️ **Use It Safely**
* Always use **3% hydrogen peroxide**—stronger concentrations must be heavily diluted and can harm plants.
* Avoid overuse; once or twice a week is plenty for most treatments.
* Store in a dark bottle away from light, as it breaks down when exposed to sunlight.
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### 🌿 **Final Thoughts**
Hydrogen peroxide may not look like much, but it’s a **mighty multi-tasker** in the garden. Whether you’re starting seeds, battling fungus, or reviving a dying houseplant, it’s a safe and inexpensive solution that truly lives up to the hype.
So next time you’re in the garden and something seems off, reach for that little brown bottle—you might just save your plants’ lives.
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Would you like a printable “cheat sheet” for hydrogen peroxide garden uses or a set of recipe cards to include with this article?
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