---
product_id: 472533978
title: "1.5\" x 1.5\" x 1.5\" Mini Blocks Grow Media Rockwool Stonewool Cube Propagation + Twin Canaries Chart - 15 Cubes"
brand: "grodan"
price: "€ 30.55"
currency: EUR
in_stock: true
category: "Grodan"
url: https://www.desertcart.es/products/472533978-1-5-x-1-5-x-1-5-mini-blocks
store_origin: ES
region: Spain
---

# root development through entire plug optimal air/water balance 1.5" uniform cube size 1.5" x 1.5" x 1.5" Mini Blocks Grow Media Rockwool Stonewool Cube Propagation + Twin Canaries Chart - 15 Cubes

**Brand:** grodan
**Price:** € 30.55
**Availability:** ✅ In Stock

## Summary

> 🌿 Grow smarter, not harder with Grodan Mini-Blocks!

## Quick Answers

- **What is this?** 1.5" x 1.5" x 1.5" Mini Blocks Grow Media Rockwool Stonewool Cube Propagation + Twin Canaries Chart - 15 Cubes by grodan
- **How much does it cost?** € 30.55 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/472533978-1-5-x-1-5-x-1-5-mini-blocks)

## Best For

- grodan enthusiasts

## Why This Product

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

## Key Features

- • **Balanced Hydration:** Engineered air/water ratio ensures ideal seedling environment
- • **Robust Yet Flexible:** Durable rockwool structure adapts without breaking
- • **Root-Optimized Design:** Identically shaped plugs promote full-root development
- • **Effortless Propagation:** Mini-Blocks sit flat without support for easy tray use
- • **Precision Perfect Cubes:** Consistent 1.5" x 1.5" x 1.5" blocks for uniform growth

## Overview

Grodan Mini Blocks are 1.5-inch rockwool cubes designed for superior seed and cutting propagation. Featuring optimal air and water balance, uniform seed holes, and robust yet flexible structure, these blocks enable consistent root development and easy tray placement without additional support. Perfect for professional growers seeking reliable, efficient propagation media.

## Description

Starter Mini-Blocks can sit in a tray (flat) without support for easy starting of seeds and cuttings. For best results put them on the flat side of the Gro-Smart Tray to ensure good airflow around the cubes. Remove wrapping and transplant into any loose media such as Grow-cubes or Grow-Chunks, or leave wrapping on and set on top of a larger Gro-Block. The advantage Mini-Blocks have over A-OK Starter Plugs and Macro Plugs is that Mini-Blocks can sit in a tray without any support.

## Features

- Improved homogeneity
- Optimum robustness and flexibility
- Ideal air/water balance
- Consistent shape of the seed hole
- Identically shaped plugs, Root development through the entire plug

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00XQEDDZ6 |
| Item model number | 4316246501 |
| Manufacturer | Grodan |
| Package Dimensions | 19.61 x 11.81 x 4.19 cm; 68 g |

## Product Details

- **Brand:** Grodan
- **Item form:** Square
- **Item weight:** 0.07 Kilograms
- **Liquid volume:** 1.5 Liters
- **Specific uses for product:** Root Development

## Images

![1.5" x 1.5" x 1.5" Mini Blocks Grow Media Rockwool Stonewool Cube Propagation + Twin Canaries Chart - 15 Cubes - Image 1](https://m.media-amazon.com/images/I/71F+F9z+y1L.jpg)

## Questions & Answers

**Q: Do these have any nutrition? For the seed like regular super soil**
A: No, you have to add nutrients to your water

**Q: How many days old would you transplant cannabis seedlings from these mini-cubes to 6x6? I’m thinking 3 weeks from seed?**
A: Anytime you don't have to wait the bigger the better put them outside will be just fine

**Q: Safe for aquarium fish?**
A: They are high in ph. Soak them in fresh water for a few hours and then rinse for a few minutes and the soul be fine and check your aquarium water and adjust the ph as you would normally

**Q: can you plant these in soil?**
A: Yes you can on a side note these are inert meaning no nutrients probably just a little cal/mag. Or just soak in water

## Frequently Bought Together

- Grodan 1.5" x 1.5" x 1.5" Mini Blocks Grow Media Rockwool Stonewool Cube Propagation + Twin Canaries Chart - 15 Cubes
- HydroDynamics Clonex Rooting Compound, 100 ml
- General Hydroponics pH Control Kit For A Balanced Nutrient Solution

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*Product available on Desertcart Spain*
*Store origin: ES*
*Last updated: 2026-03-05*