Yorkshire Bonsai Kanuma Medium Grain Soil for Bonsai Trees

Improve your bonsai’s health and root development with Yorkshire Bonsai Kanuma Medium Grain Soil, a premium Japanese volcanic substrate specially designed for acid-loving trees. With a naturally low pH of around 5.5, Kanuma helps create the ideal growing conditions for species such as azalea, camellia and gardenia, while also supporting healthy growth in a wide range of bonsai trees. Its lightweight, porous structure promotes excellent aeration and prevents soil compaction, allowing roots to breathe and thrive.

The medium grain size (approximately 2–6mm) makes it particularly suitable for medium to larger bonsai, as it maintains structure over time and ensures consistent drainage. It also retains just enough moisture to prevent drying out during warmer conditions, striking the perfect balance between hydration and airflow. Whether used on its own or blended with other substrates like akadama or lava rock, Yorkshire Bonsai Kanuma soil is an essential component for achieving healthy, vibrant bonsai growth.

Ideal for:

• Azalea, camellia and other acid-loving bonsai
• Medium to large bonsai trees
• Improving drainage and root aeration
• Mixing with akadama or pumice substrates
• Preventing soil compaction and overwatering

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