Single-ingredient Kiryu
Pure Kiryu in a 1.6 L pack, with no added fertiliser, for standalone use or as a hard mineral component in a bonsai mix.
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Kiryu Bonsai Mix 1.6lt
Normal price
€16,00
Conifer bonsai · Japan · 1.6 L
Kiryu Bonsai Mix 1.6 L
Kiryu, also known as Kiryuzuna, is a hard granular Japanese mineral substrate with a neutral pH. Its stable structure and high permeability to water and air make it especially useful for pines, junipers, Chamaecyparis and other conifer bonsai that need clean drainage and root-zone oxygenation.
Neutral pHBalanced mineral profile
1.6 LActual pack size
Hard grainsDurable structure
JapanOrigin
Composition & profile
Hard Japanese mineral substrate for conifer bonsai
Kiryu is a granular mineral material with neutral pH and naturally occurring trace elements. Use it alone or blend it with Akadama, pumice, lava or pozzolana for a more open, free-draining root zone.
- Hard granular structure: Resists rapid breakdown and helps keep the root zone open for longer.
- Water and air permeability: Helps excess water drain away and supports oxygen movement around the roots.
- Neutral pH: Provides a balanced mineral base, especially useful in mixes for conifers.
- Natural trace elements: Its mineral profile contains trace elements but no added fertiliser, so feeding is managed separately.
More durable structure
Hard grains maintain open air spaces and suit conifers that are typically repotted less frequently.
Fast drainage
Good permeability moves excess water away and helps air travel through the root zone.
Flexible blending
Use it alone or with Akadama, pumice, lava and other suitable mineral materials, adjusting the mix to the species and climate.
Use & repotting
A targeted mineral base for pines, junipers and other conifers
Especially suitable for Pinus, Juniperus and Chamaecyparis. Adjust the final ratio to the species, pot, climate and watering routine.
- Pinus
- Juniperus
- Chamaecyparis
- Conifer bonsai
- Mixes with Akadama
- Greater drainage
Sieve or rinse lightly only if very fine particles are present.
Use Kiryu alone or combine it with Akadama, pumice, lava or pozzolana to suit the individual conifer.
Work the grains between the roots and secure the tree without heavy pressure.
After repotting, water evenly and allow all excess to leave through the drainage holes.
Kiryu drains quickly, but watering remains individual
Check actual moisture inside the pot, the season, wind, temperature and the composition of the mix. No fixed schedule suits every conifer.
In the pack
Kiryu Bonsai Mix · 1.6 L
Granular Japanese Kiryu. As a natural product, it may show small differences in colour and particle size between batches.
Use
Standalone or in a mineral blend
Use it alone or as a hard, free-draining component in a tailored bonsai mix.
Storage
Close the pack securely and keep it in a dry, shaded and covered place, protected from rain, contamination and excess moisture.
Technical details
The verified Kiryu profile
The details below are limited to characteristics confirmed for this product and its pack.
MaterialKiryu / Kiryuzuna
FormHard granular mineral
pHNeutral
OriginJapan
Pack size1.6 L
Added fertiliserNone
Main useConifer bonsai
Main functionAeration & drainage
Akadama for a versatile base or Kanuma for acid-loving bonsai
Combine Kiryu with Akadama for an air-and-moisture balance, or choose Kanuma for plants that need a more acidic root zone.
Frequently asked questions
Quick answers about conifers, pH, blending, watering and feeding.
01What exactly is Kiryu?
It is a hard granular Japanese mineral substrate with neutral pH, good water and air permeability and naturally occurring trace elements.
02Which bonsai is it suitable for?
It is mainly used for conifer bonsai, especially Pinus, Juniperus and Chamaecyparis, and in other mixes that need greater drainage.
03Can I use it on its own?
Yes. It can be used alone for suitable conifers or blended with Akadama, pumice, lava, pozzolana and other appropriate materials.
04Why is its hard structure useful?
Hard grains resist rapid breakdown and help the mix maintain air spaces and good drainage.
05How does it affect watering?
Kiryu is highly permeable and free-draining. Check actual moisture inside the pot and adjust watering to the species, season and final mix.
06Does it contain fertiliser?
No. It contains naturally occurring mineral trace elements but no added fertiliser. Apply suitable feed to match the needs of the bonsai.