1-4mm Horticultural Pumice

Our 1–4mm Horticultural Pumice is a lightweight, fine-grade pumice aggregate that improves soil structure, drainage, and aeration. Its porous nature allows it to hold both air and moisture at the same time, giving plant roots the perfect balance for healthy growth. This product is widely used in potting mixes, seed raising, hydroponics, and vegetable gardens where consistent soil performance is essential.

Unlike heavier materials, pumice is easy to handle and mixes evenly into soil without compacting. As part of our range of decorative aggregates and specialist products, it’s a trusted choice for growers, landscapers, and home gardeners alike. If you’re searching for horticultural pumice near me in Tauranga, Gammans has quality pumice to help your plants thrive.

For more guidance on choosing the right material for your project, check out our article: Building, Landscaping, or Drainage? How to Choose the Right Aggregate.

Need help estimating? Try our Volume Calculator.