Pumice 1-7mm (Cactus/Succulent/Bonsai)

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26 reviews

Size: 2L
Price:
Sale price$8.50 Regular price$10.00

Pickup available at Bellambi

Usually ready in 24 hours

Description

This natural volcanic rock is the ultimate soil conditioner for cacti, succulents, bonsai, and no-till gardening.

With its highly porous structure, pumice enhances aeration and drainage while retaining just enough moisture to support healthy root development. Each stone acts as a micro-reservoir, holding water and nutrients which are released gradually into the surrounding soil. This steady hydration and nutrient delivery system reduces plant stress and promotes vigorous growth.

Features

  • All-natural siliceous volcanic rock

  • Particle size: 1–7mm, ideal for horticultural use

  • Porous structure improves oxygen availability and drainage

  • Retains moisture and nutrients for slow, steady release

  • Pre-washed and screened to remove fines and prevent "concreting"

  • Lightweight yet durable, making it perfect for pots and raised beds

Why You Should Buy

Whether you're caring for sensitive bonsai roots or cultivating water-wise succulents, this pumice delivers essential air-to-water balance in your soil. It reduces the risks of overwatering, compaction, and root rot while offering long-lasting structure that doesn't degrade over time. Its ability to be soaked in nutrient solutions prior to use adds even more customisation for growers seeking to boost plant vitality. The pumice is responsibly sourced from a land-based resource near Lake Taupo, New Zealand, ensuring environmental care and high-quality mineral content.

Common Applications

  • Ideal for use in cactus, succulent, and bonsai soil mixes

  • Enhances drainage in raised garden beds

  • Used in hydroponics and no-till gardening setups

  • Acts as a reusable aggregate in potting media blends

FAQs

Is this pumice pre-washed and ready to use?
Yes, it is washed and screened, ensuring no fine particles that could cause soil compaction or excess water retention.

Can this be mixed directly into existing potting soil?
Absolutely, it can be blended into most potting mixes to improve aeration and drainage instantly.

What is the recommended use rate?
For best results, mix at a ratio of 1:1 with existing soil or up to 70% for cactus and succulent mixes.

Does it break down over time?
No, pumice is long-lasting and maintains its structure, making it ideal for permanent planting mediums.

Where is the pumice sourced from?
It is mined within 50km of Lake Taupo in New Zealand and known for its superior hardness and lightness.

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Customer Reviews

Based on 26 reviews
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(25)
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L
Love Cactus
Green Thumbs Up

Speedy delivery and great product!

S
Sue M.
Super Speedy

This is the second time I have ordered from Dr Greenthumbs and, again, they did not disappoint.
Super speedy delivery, well packed and great product.

A
Anonymous
Satisfied with the purchase

Will order again once run out. Sizes similar to the images.

J
Jane Chen
Great one

Good quality, just as described. Good value. Highly recommended.

G
Gavin Wolek
Pumice

So far so good

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