Soil Amendment Pumice Coarse 8-16 mm

A happy plant starts with mixing your own soil.

Tailor your own ideal soil to all the needs of your plants. We provide the essential elements for an excellent potting mix.

For airy soil and healthy roots.

Pumice is a lightweight, porous volcanic rock that provides more air in the soil and better drainage. It helps drain excess water quickly while still retaining a small amount of moisture. This gives roots more oxygen and reduces the risk of root rot.
Because pumice does not decompose or compact, the structure of the potting mix remains airy for years. It is therefore particularly suitable for cacti, succulents, and other plants that are sensitive to wet feet. Houseplants with a well-developed root system also benefit from the extra space and aeration.

Benefits of pumice:

• Improves drainage
  
• Keeps the soil airy and loose
  
• Reduces the risk of root rot
  
• Retains limited moisture without becoming waterlogged
  
• Does not compact or decompose
  
• Suitable for almost all potted and container plants
  
• Can also be used decoratively as a top dressing
  

Pumice is often compared to perlite. Both improve drainage, but pumice is heavier, more durable, and stays better in place in the pot. This makes it particularly suitable for larger and mature plants.

Usage

For cacti and succulents: mix 30-60% into the potting mix.
* For houseplants: add 20-30% for extra aeration.
* As a top dressing: apply a layer of 1-2 cm on top of the potting mix.
* In terrariums: combine with bark, moss, or activated charcoal for extra structure and drainage.

In short: pumice provides a more airy and better-draining substrate, allowing roots to grow healthier and making plants less susceptible to overly wet conditions.

Particle size

# Fine (4-8 mm): suitable for smaller pots, seedlings, cuttings, and finer soil mixes. Distributes evenly throughout the potting mix.
# Coarse (8-16 mm): ideal for larger pots, aroids, orchids, cacti, and plants with thick roots. Provides maximum aeration and rapid drainage.