Horticultural Pumice

4.7 (14)
In stock: 25+

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Size: 25 Litre
Grade: 1-2mm
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SKU: PUM1-2.25

Description

Horticultural Pumice

Pumice is a light siliceous vesicular volcanic rock that is suitable for use in horticulture and hydroponics. Its porosity provides air spaces that maintain aerobic conditions around the roots while water is contained within the pores. Surface tension around the outside of the pumice particles increases the water-holding capacity of the growing medium.

Our pumice is mined from a land-based resource, within 50kms of Lake Taupo in the North Island of New Zealand, and it is characterized by its relative hardness and lightweight in comparison to competing aggregates. The washing and screening of our pumice particularly for horticultural applications mean that no “fine” particles are included. Unwashed pumice can cause “concreting” and higher water holding capacity than required, consequently affecting root development.

This hardness and porosity allow free drainage, lowering the risk of root-rot diseases.

Pumice grade: 1-2mm, 1-7mm, or 7-20mm

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What customers say

Buyers consistently mention good service, straightforward transactions and timely delivery, with several also noting competitive pricing. The pumice is reported to work well in bonsai, cactus, aroid and DIY pon mixes, and is described as clean and good quality. One buyer found the material too coarse and wet, while another considered the freight cost excessive.

  • Service and delivery
  • Price and value
  • Mix performance

Summarised by AI from 14 customer reviews · updated August 2026

Specifications

Suitable For Landscape + Protected Cropping + Nursery

Documents

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