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Yamamoto's

Yamamoto's Organic Concentrated Bonsai Fertilizer - Japan's Favorite - 8oz - No Harsh Chemicals

  • Based on 129 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Thursday, Oct 22
Order within 23 hours and 2 minutes
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Features

  • Japan's Best Selling Organic Bonsai Fertilizer. From the people who know Bonsai!
  • 100% Organic - Contains no harsh chemical fertilizers
  • Contains all Major and Micro Nutrients needed for all types of Bonsai Plants. Nitrogen: 2.7%. Phosphorus 3%. Potassium 2.2%
  • Concentrated. Just add 1 tablespoon per quart of water. Use every second watering.
  • Award-Winning Bonsai formulation.

Description

Imported from Japan, this is the best selling ORGANIC bonsai fertilizer. It does not contain any harsh chemical fertilizers. Containing both slow and fast release nitrogen, it has all of the major and micro nutrients that bonsai plants need to thrive in a gentle organic fertilizer. Award winning organic bonsai fertilizer is derived from fish and rice mash. No unpleasant smell! An 8 oz bottle makes over 4 gallons of fertilizer solution.

Brand: Yamamoto's


Item Weight: 8 ounces


Item Form: Liquid


Liquid Volume: 250 ml


Specific Uses For Product: Organic


Brand Name: Yamamoto's


Number of Packs: 1


Manufacturer: Yamamoto's


Number of Items: 1


Unit Count: 8.45 Fluid Ounces


Item Form: Liquid


Specific Uses For Product: Organic


Coverage: Medium


Target Species: Bonsai Plants


Item Weight: 8 ounces


Liquid Volume: 250 ml


Mixing Ratio: 14


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Oct 22

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews

    • Great pure product
It’s a great product. I have been using it for my Japanese pine tree bonsai over two years. My trees are very healthy. Recommended.
Reviewed in the United States on February 22, 2026 by Richard L
    • Amazing results. Pleasant, sweet smell.
Review Image by Yolanda Schmidt
After my little tree went dormant over the winter, it was time to put it back out on my porch recently. It was looking a little under the weather, with slightly yellowing needles. I purchased Yamamoto’s, as it is all organic, and I think that is easier on Bonsai than chemical fertilizers. I was wondering about it smelling like fish, since fish is one of the ingredients, but, being outside, I wasn’t too concerned. I opened the product and was very pleasantly surprised. It did not smell like fish at all. It has a slightly sweet smell, not unpleasant at all. I mixed it according to the directions, and watered it. About 4 days later, the tree was completely dark green, and I think it is starting to grow. I didn’t expect this kind of response. I guess the Japanese know their bonsai better than we ever will. I’m a customer for life. On another note, the front of the bottle is in Japanese, but one of the side panels is in English with good directions. This will be the only fertilizer I will ever give to my little tree! ... show more
Reviewed in the United States on April 12, 2021 by Yolanda Schmidt
    • Works great for just about any bonsai tree
I've noticed a few inches of new growth on all my trees within a few days
Reviewed in the United States on May 4, 2024 by melissa duran
    • Great product
Did wonderful for my Bonsi tree.It has new growth on it the 2 weeks I've had it. Thanks for the great reviews. Would recommend.
Reviewed in the United States on April 20, 2024 by Clifford Pickerd
    • Works just as intended
Mixed half a tablespoon with a water bottle (instead of a quart like the directions say) and 3 days later my bonsai is looking much healthier! There were spots in the foliage that were yellow and some that were brown and every day since I'm seeing less and less
Reviewed in the United States on May 4, 2023 by Ryan sutton
    • Nothing special
Just like any other fish emulsion fertilizer. Bonsai specific...not so sure.
Reviewed in the United States on May 31, 2024 by Pat O
    • Two thumbs up
Works great !! My trees love it !!
Reviewed in the United States on May 3, 2025 by Anthony G
    • Great product
I have noticed a great improvement in my bonsai growth using this product
Reviewed in the United States on May 21, 2024 by thomas jamieson

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