Fine Pumice 1/8"-3/16" by The Bonsai Supply - 24lb

Create healthier root systems and more refined soil blends with Fine Pumice by The Bonsai Supply. Carefully screened to a particle size of 1/8"–3/16", this premium horticultural pumice delivers an exceptional balance of moisture retention, drainage, and aeration, making it one of the most versatile components in bonsai cultivation.

The fine particle size is particularly well suited for shohin bonsai, deciduous trees, tropical species, and refined specimens where a smaller soil profile is preferred without sacrificing oxygen availability or water management. Its porous structure absorbs moisture and nutrients while maintaining the air spaces roots need to grow vigorously and remain healthy.

Unlike organic materials that decompose and compact over time, pumice retains its structure for years, helping maintain consistent soil performance between repotting cycles.

Features

• Premium horticultural pumice screened specifically for bonsai use
• Excellent balance of water retention and drainage
• Fine particle size ideal for smaller containers and refined trees
• Highly porous structure promotes oxygen exchange
• Helps maintain long-term soil structure and stability
• Reusable after cleaning and screening

Ideal For

• Shohin bonsai
• Deciduous bonsai species
• Tropical bonsai species
• Refined bonsai trees
• Custom bonsai soil blends
• Increasing water retention in fast-draining mixes

Specifications

• Brand: The Bonsai Supply
• Product Type: Horticultural pumice
• Particle Size: 1/8"–3/16"
• Grade: Fine
• Weight: 24 lb
• Use: Soil component and root development
• Suitable For: Bonsai soil blends and refinement projects

Healthy roots are the foundation of exceptional bonsai, and fine pumice provides the moisture balance, aeration, and long-term stability needed to support thriving trees year after year.