Your Cart is Empty


Japanese Pumice (Hyuga), Fine, 1-3mm

54 Reviews
6 items left

Please note that 3 different sizes of this product is stocked; Fine (1-3mm), Small (3-6mm) and Medium (5-8mm).

What is it?

Japanese pumice, or Hyuga as it is known in Japan is a naturally occurring volcanic product from the south part of Miyazaki Prefecture in Japan.

Hyuga vs Pumice

These two products are very similar in characteristics however due to the manner in which this Hyuga is formed in nature it is slightly softer and more porous than conventional pumice. In fact Hyuga is so porous it will sink, which reduces erosion when watering. 

Due to the porosity of Hyuga aggregates in your growing mixes it enhances:

  1. water retention
  2. nutrients
  3. oxygen

It is suitable for a wide range of plant species as it has an essentially neutral pH of 6.

How to use?

Japanese pumice is recommended for Rhododendron (including Azalea), general pot plants, orchids and it of course forms a crucial part of many bonsai growing mixes.

If I had only one soil component to use for bonsai it would be 100% pumice. If you have akadama, add some. - Michael Hagedorn

As Hyuga will not under normal circumstances break down it can be sifted and re-used however if you intend doing so a disinfecting treatment using Sporekill is strongly recommended to reduce the risk of spreading fungal or bacterial issues.

Hyuga can be combined with other elements such as akadama or peat (no more than 20% of the total mix). Due to the good drainage qualities of hyuga it is very often used to assist a sick tree to regain vigor and health. In such a case 100% Japanese pumice may be used.

For typical growing conditions, a ratio of 1(akadama) : 1(pumice) can be used. For plants which prefer more moisture you can double the quantity of akadama.

Customer Reviews

5.0 Based on 54 Reviews
5 ★
4 ★
3 ★
2 ★
1 ★
Customer Photos
Write a Review

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Filter Reviews:
    Kosie R.
    South Africa South Africa

    Japanese Pumice (Hyuga)

    Awesome product and service, exactly what I expected.

    Kosie Roux verified customer review of Japanese Pumice (Hyuga), Fine, 1-3mm
    Martin F.
    South Africa South Africa

    Japanese Bonsai Pumice

    Excellent product, excellent service as always.

    Donovan K.
    South Africa South Africa

    Hard to find elsewhere in SA

    This is the only supplier I know of where you can get different grades of pumice and akedama locally. It's a high quality imported product, evenly graded. Great for bonsai and specialist horticulture like succulents.

    Magda B.
    South Africa South Africa

    Purchasing from Bonsai Tree

    Ordering my products was easy and fast, delivery even faster. I found the products in good order and my plants look excellent!

    Alex C.
    South Africa South Africa

    Pumice for all

    I recently discovered Bonsai tree after being in search of pumice in KZN for weeks. This is truly the highest quality product. My pumice goes in all my succulent mixes no matter what. I will keep using this product so long as its available.