---
product_id: 107008888
title: "1.5\" Grodan Rockwool Cubes for Seed Starter (98 Hydroponic Plugs) + The Hydroponic City Stakes"
brand: "the hydroponic city"
price: "$U2358"
currency: UYU
in_stock: true
url: https://www.desertcart.uy/products/107008888-1-5-grodan-rockwool-cubes-for-seed-starter-98-hydroponic
store_origin: UY
region: Uruguay
---

# Superior water retention Sterile, pH-neutral rockwool Optimal root aeration 1.5" Grodan Rockwool Cubes for Seed Starter (98 Hydroponic Plugs) + The Hydroponic City Stakes

**Brand:** the hydroponic city
**Price:** $U2358
**Availability:** ✅ In Stock

## Summary

> 🌱 Unlock next-level growth with every cube—because your roots deserve the best!

## Quick Answers

- **What is this?** 1.5" Grodan Rockwool Cubes for Seed Starter (98 Hydroponic Plugs) + The Hydroponic City Stakes by the hydroponic city
- **How much does it cost?** $U2358 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/107008888-1-5-grodan-rockwool-cubes-for-seed-starter-98-hydroponic)

## Best For

- the hydroponic city enthusiasts

## Why This Product

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

## Key Features

- • **Hydroponic Powerhouse:** Engineered for flawless water and air balance to supercharge root growth.
- • **Versatile Cultivation:** Ideal for vegetables, herbs, flowers, and cannabis—grow your green empire your way.
- • **pH Perfected for Roots:** Inert basalt-based substrate ensures a balanced pH for healthy, vigorous root systems.
- • **Mess-Free Growth Medium:** No soil, no fuss—just clean, sterile rockwool that keeps moisture locked in.
- • **Plug & Play Propagation:** Pre-sized 1.5" cubes fit perfectly in trays for effortless seed starting and cloning.

## Overview

Grodan 1.5" Rockwool Cubes (98 plugs) are a sterile, pH-neutral growing medium made from spun basalt rock, designed for hydroponics and soilless systems. They offer superior water retention and optimal aeration to promote rapid, healthy root development, making them perfect for seed starting, cloning, and propagation across a variety of plants.

## Description

1.5" Grodan Rockwool Cubes for Seed Starter (98 Hydroponic Plugs) + The Hydroponic City Stakes

## Features

- Ideal for Hydroponics and Soilless Growing - Rockwool cubes provide excellent water retention and air flow, making them perfect for hydroponic systems, aeroponics, and other soilless grow methods.
- Promotes Strong Root Development - Engineered for optimal root aeration, Grodan cubes encourage rapid and healthy root formation—ideal for seeds, clones, and cuttings.
- Easy to Use for Propagation - Simply wet, insert seeds or cuttings, and place in a tray or grow system. Grodan cubes maintain structure and moisture without mess or soil.
- Great for Seed Starting and Cloning- Perfectly sized for germination trays and humidity domes. Great for vegetables, herbs, flowers, and cannabis cultivation.
- Sterile and pH Neutral Growing Medium - Made from spun basalt rock, Grodan rockwool is an inert and sterile substrate with a balanced pH—ideal for supporting healthy root development from seed to transplant.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Item Weight | 0.7 Pounds |
| Number of Pieces | 98 |
| Item Dimensions L x W | 1.5"L x 1.5"W |
| Material Type | Rockwool |
| Style Name | Tube |

## Product Details

- **Indoor/Outdoor Usage:** Indoor
- **Brand:** The Hydroponic City
- **Material Feature:** Natural
- **Color:** White
- **Special Feature:** organic
- **Item Weight:** 0.7 Pounds
- **Unit Count:** 1.0 Count
- **Number of Pieces:** 98
- **Style:** Tube

## Images

![1.5" Grodan Rockwool Cubes for Seed Starter (98 Hydroponic Plugs) + The Hydroponic City Stakes - Image 1](https://m.media-amazon.com/images/I/7162ZHhFirL.jpg)

## Available Options

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

## Questions & Answers

**Q: Would these fit inside an aerogarden plastic cage?**
A: Yes if they are the small cages.

**Q: I bought this is it good for seeds?**
A: It is fantastic for germinating seeds,

**Q: Do these ship in packaging that prevents the plugs from being crushed during transportation?**
A: Yes. My plugs were not damaged at all.

**Q: Can these then be planted in soil outside and deteriorate?**
A: They can be, best if roots are extending out of it first, and if you leave a little bit of it sticking out of the soil. They won't deteriorate, rockwool is basalt rock that's been superheated and then spun like cotton candy

## Frequently Bought Together

- 1.5" Grodan Rockwool Cubes for Seed Starter (98 Hydroponic Plugs) + The Hydroponic City Stakes
- HydroDynamics Clonex Rooting Compound, 100 ml
- General Hydroponics pH Control Kit For A Balanced Nutrient Solution

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**Shop now:** [https://www.desertcart.uy/products/107008888-1-5-grodan-rockwool-cubes-for-seed-starter-98-hydroponic](https://www.desertcart.uy/products/107008888-1-5-grodan-rockwool-cubes-for-seed-starter-98-hydroponic)

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*Product available on Desertcart Uruguay*
*Store origin: UY*
*Last updated: 2026-01-22*