Short answer: Yes, you can.
It is non-toxic, safe, and surprisingly effective at preventing fungal growth, preserving the health of your plant, and keeping leaves fresh.
You may have heard of hypochlorous acid (HOCl) if you've been looking for a mild, natural way to take care of your plants. Don't be fooled by the name; it's actually one of the mildest and greenest solutions you can use in your garden and home. It sounds like something from a chemistry textbook.
What Is Hypochlorous Acid?
Fun fact: your body produces it on its own.
Your white blood cells naturally produce hypochlorous acid to combat bacteria and aid in the healing process. Stabilized into a spray, it adds the same antiseptic, anti-germ properties to your home, skincare regimen, and even plant care.
In contrast to harsh disinfectants like bleach, HOCl is:
Non-toxic and biodegradable; safe for children, animals, and plants; mild yet effective against fungi and bacteria
It's similar to giving your plants a nutritious boost without the use of harsh chemicals or residues.
Why Plants Respond Well to HOCl
The appearance and growth of your plants can be significantly improved with a light mist of hypochlorous acid spray.
Here’s why:
- Helps control fungi: HOCl can help control mold, leaf spot, and powdery mildew without damaging fragile foliage.
- It lowers the risk of root rot and other plant diseases by controlling harmful microbes and reducing bacterial buildup.
- Maintains leaves cleaner: Frequent misting enhances your plant's capacity to absorb light and air by clearing dust and opening stomata, or pores.
- Pests are deterred by cleaner, healthier leaves, even though they don't directly kill insects.
- Safe for delicate species: When used properly, it is well tolerated by even delicate houseplants.
It’s a simple, science-backed way to help your plants thrive.
How to Use Hypochlorous Acid on Plants
It is simple and easy for beginners to use HOCl on plants.
For routine maintenance:
To keep your plant's leaves clean and healthy, spray them once a week.
Regarding fungal problems:
Until the issue is resolved, mist the impacted areas every two to three days.
Expert advice: Always apply a mist in the morning or late at night. Avoid direct sunlight immediately after spraying, since water droplets can magnify sunlight and scorch your leaves.
Why Honeydew Labs’ Spray Works So Well
Our Honeydew Labs Hypochlorous Acid Spray (200 ppm, pH ~5.5) is gentle enough for your skin—which makes it safe for your plants too.
You can spray it freely without worrying about residue, harsh fumes, or irritation.
What makes it stand out:
- No added fragrance or alcohol
- Safe for skin, pets, and foliage
- A fine, even mist that coats leaves without over-soaking
One product for skincare, home care, and plant care—simple, clean, and effective.
Other Helpful Plant Care Additions
Hypochlorous acid works even better when combined with other natural, plant-friendly treatments. Consider pairing it with:
- Neem Oil Spray for natural insect control (e.g., Bonide Neem Oil).
- In moderation, use diluted hydrogen peroxide to help oxygenate soil and lessen fungus gnat issues.
- The use of beneficial microbes, such as Mammoth P or Great White Mycorrhizae, can enhance resilience and fortify roots.
These tools work together to provide a balanced, healthy environment for your plants to thrive in.
The Bottom Line
Hypochlorous acid can be sprayed on plants without risk.
It's a mild, efficient, and environmentally responsible way to clean leaves, control fungus, and encourage more robust growth. HOCl is a flexible solution that naturally supports your house and garden, whether you're treating a problem or keeping your plants healthy on a daily basis.
If it’s gentle enough for your garden, you might be curious whether it’s just as safe for your furry friend — will HOCl spray remove plaque from dog teeth?
References
- Block, M.S., & Rowan, B.G. (2020). Hypochlorous Acid: A Review. Journal of Oral and Maxillofacial Surgery, 78(9), 1461–1466. https://doi.org/10.1016/j.joms.2020.06.029
- USDA National Organic Program. (2016). Guidance on the Use of Hypochlorous Acid in Organic Crop Production. https://www.ams.usda.gov/rules-regulations/organic
- EPA (Environmental Protection Agency). (2021). List of Antimicrobial Products Effective Against Fungi and Bacteria. https://www.epa.gov/pesticide-registration
Written by
Honeydew Labs Team
