Close-up of screened horticultural pumice—light, airy texture perfect for soil drainage and long-term aeration.
Hand holding pumice stone—porous and lightweight, ideal for mixing into soil to boost airflow and prevent overwatering.
4L bag of horticultural pumice stone—ideal for drainage, aeration, and preventing root rot in potted plants.
8L Optimize Organics pumice—lightweight, porous stone for indoor and outdoor soil mixes to boost drainage.
16L pumice stone—screened and ready for horticultural use to improve aeration, reduce compaction, and retain air pockets.
25L coarse pumice for plants—ideal for drainage in tropical mixes, succulents, and raised garden beds.
Close-up of screened horticultural pumice—light, airy texture perfect for soil drainage and long-term aeration.
Hand holding pumice stone—porous and lightweight, ideal for mixing into soil to boost airflow and prevent overwatering.
4L bag of horticultural pumice stone—ideal for drainage, aeration, and preventing root rot in potted plants.
8L Optimize Organics pumice—lightweight, porous stone for indoor and outdoor soil mixes to boost drainage.
16L pumice stone—screened and ready for horticultural use to improve aeration, reduce compaction, and retain air pockets.
25L coarse pumice for plants—ideal for drainage in tropical mixes, succulents, and raised garden beds.

Pumice Stone (3-12mm)

$11.00
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Shipping calculated at checkout.
Size

Pumice Stone (1/8"–1/2")

Aeration • Drainage • Long-Term Soil Structure

Pumice is a naturally occurring, lightweight volcanic stone formed when molten lava rapidly cools and depressurizes—creating a porous structure filled with tiny air pockets. Mined in British Columbia, this Canadian-sourced pumice is a durable, mineral-rich amendment that improves drainage, aeration, and soil structure in both indoor and outdoor growing environments.

Unlike perlite, pumice is heavier and won’t float to the top of your pots, making it a long-lasting alternative for growers who want better moisture balance and microbial support.

🌿 Benefits

  • Improves drainage while retaining small amounts of moisture 

  • Supports airflow around roots and prevents compaction

  • Offers space for beneficial microbes and fungal networks like mycorrhizae

  • Heavier than perlite—stays evenly distributed in the mix

  • Neutral pH, inert, and will not break down over time

  • Builds long-term structure in garden beds or container soil

🌱 How to Use

  • Soil Mixes – Blend into potting mixes or garden beds at 10–40% by volume to increase porosity and reduce compaction

  • Long-Term Use – Ideal for living soil systems where structural amendments are needed that won’t degrade

🧪 Specs

  • Material: 100% Natural Volcanic Pumice

  • Particle Size: 1/8"–1/2"

  • pH: Neutral

  • Origin: Mined in British Columbia, Canada

🌿 This product complies with Canadian certified organic crop production standards.

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