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House Plants/plant nutrients


Hi Will I use liquid fertilizer. I use Seachem flourish and Kent marine pro plant also I put In 3% hydrogen proxide (half teaspoon) and mix it in 1 gallon of water then water the plants. I was wandering if these provided all the essential nutrients and vitamins? Thanks for your time

Hi Cynthia,

Seachem Flourish and Kent Marine are formulated for use with aquarium plants. I do not recommend either for non-aquarium plants. Hydrogen peroxide is another household product that appeals to people, but has no proven benefits for plants.

Indoor plants use nutrients in very minute quantities and I have yet to solve a plant problem by adding nutrients. Fertilizing is greatly misunderstood and the benefits are over sold by the manufacturers. If your plants are not doing well, I can assure you that plant food will not solve the problem. I wish it were that easy, but it is not. Focus on light and water for your plants, not fertilizer and humidity.

If you feel obligated to use plant food, use the cheapest commercial product available and dilute it one-quarter of the recommended dose. At that dilution, it will not do any harm, even if it provides few if any benefits.

I have written a detailed article on fertilizer that I will email for free to you (or anyone else) who emails a request to me at I have also written an indoor plant care book in a PDF format that I can sell you if you contact me at my email address.

Please let me know if any of this is unclear or if you have any additional questions.

If this information has been helpful, please click the Rate Volunteer bar below and enter a rating and NOMINATION for me. I am a volunteer on this site so Ratings are the only compensation I receive for answering plant questions.

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Will Creed, Interior Landscaper
Horticultural Help, NYC

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Will Creed


I am the only expert in this category with professional hands-on experience and knowledge of all indoor plants. I can answer questions regarding light, water, fertilizer, repotting, pruning and humidity and temperature requirements. I can identify plant pests and provide information on safe, effective treatments. My answers are based on 35 years of professional experience and scientific research and are clear and easy to understand. I do NOT use search engines to find answers to your questions. If you read my previous posts here, you will get a good idea as to how thorough and professional my answers are.


I have over 35 years of professional indoor landscaping experience caring for plants in homes, offices, building lobbies, stores, restaurants, and other adverse environments. I have written extensively on the care of indoor plants, including a 260 page book. My specialties include Ficus trees, low light plants, repotting, pest control, and re-blooming holiday plants. Be sure to check my ratings and nominations to learn why I am the top-rated indoor plant expert. I am the only House Plant expert consistently ranked in the AllExperts Top 20.

BA, Amherst College

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