---
product_id: 304128050
title: "Boniosz 2lb Black Horticultural Lava Rock Soil Additive for Cacti, Vase Fillers, Succulents and Terrarium Plants - No Dyes or Chemicals - 100% Pure Volcanic Rock"
brand: "boniosz"
price: "€ 33.97"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.fr/products/304128050-boniosz-2lb-black-horticultural-lava-rock-soil-additive-for-cacti
store_origin: FR
region: France
---

# optimal moisture retention & drainage 100% pure volcanic rock chemical & dye free, eco-friendly Boniosz 2lb Black Horticultural Lava Rock Soil Additive for Cacti, Vase Fillers, Succulents and Terrarium Plants - No Dyes or Chemicals - 100% Pure Volcanic Rock

**Brand:** boniosz
**Price:** € 33.97
**Availability:** ✅ In Stock

## Summary

> 🌋 Elevate your plant game with nature’s volcanic secret!

## Quick Answers

- **What is this?** Boniosz 2lb Black Horticultural Lava Rock Soil Additive for Cacti, Vase Fillers, Succulents and Terrarium Plants - No Dyes or Chemicals - 100% Pure Volcanic Rock by boniosz
- **How much does it cost?** € 33.97 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/304128050-boniosz-2lb-black-horticultural-lava-rock-soil-additive-for-cacti)

## Best For

- boniosz enthusiasts

## Why This Product

- Trusted boniosz brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Versatile Multi-Use:** Ideal for cacti, succulents, bonsai, aquariums, fire pits & DIY projects.
- • **Chemical-Free & Pure:** 100% volcanic rock with zero dyes or additives—pure plant power.
- • **Natural pH Stabilizer:** Balances aquarium water acidity for healthier aquatic life.
- • **Perfect Particle Size:** Sifted & sieved for immediate potting use—no extra prep needed.
- • **Superior Drainage & Moisture Balance:** Porous structure ensures quick drainage while keeping roots hydrated.

## Overview

This 2lb bag of black horticultural lava rock offers perfectly sized, 100% pure volcanic stones that enhance soil aeration and moisture retention. Ideal for cacti, succulents, bonsai, and aquariums, it naturally stabilizes pH without any dyes or chemicals, making it a versatile, eco-friendly additive for thriving plants and aquatic environments.

## Description

Full description not available

## Features

- 【Great Size】Black Lava Rock is sifted and sieved for a perfect particle size that is ready for direct potting use.Usually it is used as a soil additive or top dressing in the art of bonsai.
- 【Easy to Maintain】Replacing existing mulch with porous lava rocks to maintain plants like succulents, orchids, cacti, and bonsai trees ensures quick drainage while maintaining a little water.and provides mineral supplements.
- 【Ideal Drainage】The porosity of lava rocks allows for good drainage while maintaining moderate moisture within soil to allow your newly potted, acid-loving plants to grow beautifully.
- 【Widely Use】The temperature tolerance and quality of Boniosz red lava rocks make it useful for filling aquariums, ashtrays, fire media, garden soil amendment, fire pits,DIY projects, potting soil mediums, in addition to great top dressing for plants.
- 【Lava Rock for Aquarium – Natural pH Stabilizer & Water Purifier】Volcanic stone helps soften alkaline water and stabilize acidic conditions, bringing water closer to neutral pH for a safer aquatic environment. Ideal for freshwater tanks, shrimp tanks, betta fish tanks, terrariums, and hydroponics.

## Product Details

- **Brand:** Boniosz
- **Style:** Modern
- **Item Volume:** 1 Quarts

## Images

![Boniosz 2lb Black Horticultural Lava Rock Soil Additive for Cacti, Vase Fillers, Succulents and Terrarium Plants - No Dyes or Chemicals - 100% Pure Volcanic Rock - Image 1](https://m.media-amazon.com/images/I/81ksJ67DImS.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Just get it
*by S***N on June 29, 2025*

I bought the 5.5lb bag of Bonsai gritty mix, and I will DEFINITELY be back to buy more! Pic of my hand next to an empty bag for reference to size (close to a 5lb bag of flour - packed full), I include this info cuz I wasn't sure what 5.5lbs was going to actually be! The size of the actual substrate is ideal and the color combo is so pretty whether it's filling the pot or just a topdressing for plant! It needs to be RINSED thoroughly in a collander outside (don't let the rinse water go down your regular kitchen drain). Once rinsed it's ready to use and IM SUCH A HAPPY CUSTOMER! Soon to be repeat TYSM! Highly Recommend!

### ⭐⭐⭐⭐⭐ Wonderful for the succulent plants
*by Y***L on July 9, 2025*

I used this product for my succulent propagation. The plants look much pleasant with the maifan sine on the surface and this product always good when using on the succulent plants 👍

### ⭐⭐⭐⭐⭐ Im a happy customer
*by L***. on June 15, 2025*

Great product. I used it on all my succulents, bonsai and cacti plants. Quick draining too. The benefits outweighs the price and actually the price is a bargain! I highly recommend it.

## Frequently Bought Together

- Boniosz 2.4lb Black Horticultural Lava Rock Soil Additive for Cacti, Vase Fillers, Succulents and Terrarium Plants - No Dyes or Chemicals - 100% Pure Volcanic Rock
- Miracle-Gro Succulent Potting Mix, For Indoor Succulents, Aloe Vera and More, Made with Miracle-Gro Plant Food, 4 qt

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**Shop now:** [https://www.desertcart.fr/products/304128050-boniosz-2lb-black-horticultural-lava-rock-soil-additive-for-cacti](https://www.desertcart.fr/products/304128050-boniosz-2lb-black-horticultural-lava-rock-soil-additive-for-cacti)

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*Product available on Desertcart France*
*Store origin: FR*
*Last updated: 2026-01-25*