---
product_id: 2220404
title: "Water Storing Crystals - Soil Moisture Retention Crystals for Indoor and Outdoor Plants - 12 oz."
brand: "miracle-gro"
price: "R542"
currency: ZAR
in_stock: true
reviews_count: 8
category: "Miracle Gro"
url: https://www.desertcart.co.za/products/2220404-water-storing-crystals-soil-moisture-retention-crystals-for-indoor-outdoor
store_origin: ZA
region: South Africa
---

# Compatible with indoor & outdoor plants Absorbs & stores water efficiently Reduces heat & drought stress Water Storing Crystals - Soil Moisture Retention Crystals for Indoor and Outdoor Plants - 12 oz.

**Brand:** miracle-gro
**Price:** R542
**Availability:** ✅ In Stock

## Summary

> 💧 Keep your plants thriving with the ultimate water-smart crystal power!

## Quick Answers

- **What is this?** Water Storing Crystals - Soil Moisture Retention Crystals for Indoor and Outdoor Plants - 12 oz. by miracle-gro
- **How much does it cost?** R542 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/2220404-water-storing-crystals-soil-moisture-retention-crystals-for-indoor-outdoor)

## Best For

- miracle-gro enthusiasts

## Why This Product

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

## Key Features

- • **Drought Defense:** Minimizes water stress, protecting plants from heat and dry spells
- • **Smart Hydration Control:** Prevents over- and under-watering for optimal plant health
- • **Water-Saving Innovation:** Reduces watering frequency by slowly releasing stored moisture
- • **Eco-Friendly Growth Booster:** Supports sustainable gardening by conserving water effortlessly
- • **Versatile Gardening Essential:** Perfect for all soil types, indoor pots, and outdoor beds

## Overview

Miracle-Gro Water Storing Crystals are a 12 oz. powder that absorbs and retains water, releasing it gradually to prevent over- and under-watering. Ideal for both indoor and outdoor plants, these crystals reduce watering frequency, protect plants from heat and drought stress, and promote healthier root systems, making them a must-have for efficient, sustainable gardening.

## Description

Help prevent over-and under-watering of plants with Miracle-Gro® Water Storing Crystals. Ideal for indoor and outdoor plants, the crystals reduce water stress in plants to help protect them from heat and drought. Simply mix with soil to reduce the amount of watering needed; then when you do water plants, crystals will swell to absorb the water. Your plants will receive the right amount of water they need to thrive.

Review: Water Storing Crystals: The Secret Weapon in My Gardening Arsenal - As an avid gardener who wholeheartedly relies on Miracle-Gro products for my gardening needs, I am thrilled to share my enthusiastic endorsement of Miracle-Gro Water Storing Crystals. This exceptional product has become an indispensable tool in my gardening arsenal, allowing me to optimize water usage and promote healthy plant growth. The Water Storing Crystals are truly a game-changer when it comes to water management in the garden. These tiny crystals have the remarkable ability to absorb and retain large amounts of water, creating a reservoir that plants can tap into during periods of drought or when regular watering is not feasible. This unique feature not only ensures the survival of my plants during water scarcity but also minimizes the time and effort required for watering. One of the aspects I admire most about Miracle-Gro is their dedication to research and development. This commitment is evident in the effectiveness of the Water Storing Crystals. When added to the soil, these crystals slowly release the stored water to plant roots, providing a consistent moisture supply that supports optimal growth. The crystals gradually rehydrate as they come into contact with water, ready to store and release moisture as needed. This continuous cycle of water absorption and release helps to establish healthier root systems and reduce water stress, resulting in stronger, more resilient plants. I have found the Water Storing Crystals to be incredibly versatile, accommodating various gardening needs. Whether I'm nurturing delicate indoor plants, tending to my vibrant outdoor flower beds, or cultivating a thriving vegetable garden, the Water Storing Crystals adapt seamlessly to any setting. Their ease of use and compatibility with different soil types make them an essential component in my gardening routine. Additionally, the Water Storing Crystals offer a sustainable solution to water conservation. By minimizing water runoff and reducing the frequency of irrigation, these crystals promote environmental responsibility while maintaining the health and vitality of my plants. I appreciate the opportunity to contribute to water conservation efforts through my gardening practices, and Miracle-Gro Water Storing Crystals enable me to do just that. In summary, Miracle-Gro Water Storing Crystals have earned my utmost admiration and trust as an essential component of my gardening routine. Their ability to absorb and slowly release water, their versatility across various plant types, and their contribution to sustainable gardening practices make them an invaluable resource. As someone who wholeheartedly relies on Miracle-Gro products for my gardening needs, I confidently recommend the Water Storing Crystals to fellow garden enthusiasts. Embrace this secret weapon, and watch your plants thrive with less water and more resilience. With Miracle-Gro, you can trust in their expertise and witness the transformative power of their innovative solutions for gardening success.
Review: Very helpful in hot climates - These water-storing crystals worked exactly as expected. I mixed them into potting soil for outdoor plants and noticed the soil stayed moist longer between waterings, which is especially helpful in hot weather. They’re easy to prepare and expand quickly when hydrated. A little goes a long way. Great option for anyone trying to reduce watering frequency or help plants through dry spells.

## Features

- Helps prevent over- and under-watering
- Reduces water stress in plants to help protect them from heat and drought
- Ideal for indoor and outdoor plants
- Mix with soil to reduce amount of watering needed
- Crystals swell to absorb water and release later

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Best Sellers Rank | #5,932 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #264 in Garden Fertilizers |
| Brand | Miracle-Gro |
| Customer Reviews | 4.6 out of 5 stars 9,690 Reviews |
| Global Trade Identification Number | 00073561008310, 00077344770425 |
| Item Form | Powder |
| Item Weight | 12 Ounces |
| Liquid Volume | 12 Liters |
| Specific Uses For Product | Potting |

## Product Details

- **Brand:** Miracle-Gro
- **Item Form:** Powder
- **Item Weight:** 12 Ounces
- **Liquid Volume:** 12 Liters
- **Specific Uses For Product:** Potting

## Images

![Water Storing Crystals - Soil Moisture Retention Crystals for Indoor and Outdoor Plants - 12 oz. - Image 1](https://m.media-amazon.com/images/I/71qjLamqfML.jpg)

## Available Options

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

## Questions & Answers

**Q: Is it safe to use with insects?**
A: I am an industrial chemist (retired) and worked at a complex with a plant making 350,000 pounds of acrylamide (monomer) a day.  While acrylamide itself is quite toxic and carcinogenic. polyacrylamide is utterly harmless.  Polyacrylamide is, as the name suggests, a polymer of acrylamide.  The polymerization reaction destroys the toxicity and carcinogenicity of the molecule.  As long as all of the monomer is removed, there are no worries.  If you are a bit OCD, you can put the "crystals" in a large excess of water, let it sit for a few hours, and pour off the water.

**Q: can it be used in outdoor pots that already have plants in them**
A: Yes, you can use this in pots with plants in them.  Make several holes in the soil (with a stick or pencil) evenly spaced around the plant (avoiding the root area) and incorporate Miracle-Gro Water Storing Crystals evenly into the holes. Cover the holes with soil and water thoroughly to activate the water storing properties.

**Q: I want to add this product to all my landscaping during our CA drought.  Can I sprinkle it over all my plants or do I have to dig up my entire garden?**
A: No you can't sprinkle it on the ground.  But you don't have to dig up your garden either.  What you can do is dig some holes or area around each plant, getting as close as you can without damaging the plant roots.  I usually do this for an established garden areas.  I make the holes (3 for each plant) or digging areas close to plants as I can then put about 1/4 to 1/2 tsp. Then replace the dirt. After I've finished I water a bit to soak the dirt back into place.If you want to see what the Crystals look like when wet. Put about 1/4 tsp in a 2c measuring cup add about 1/2 of water.  They get huge!  Then you can just put this in the ground or planter with a plant.Hope this helps

**Q: Does anyone know how long this stuff lasts in the soil? One season, 5 seasons?**
A: According to literature it gradually deteriorates over a 2 to 3 year period turning into a harmless soil additive with a few nutrients.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Water Storing Crystals: The Secret Weapon in My Gardening Arsenal
*by E***L on May 31, 2023*

As an avid gardener who wholeheartedly relies on Miracle-Gro products for my gardening needs, I am thrilled to share my enthusiastic endorsement of Miracle-Gro Water Storing Crystals. This exceptional product has become an indispensable tool in my gardening arsenal, allowing me to optimize water usage and promote healthy plant growth. The Water Storing Crystals are truly a game-changer when it comes to water management in the garden. These tiny crystals have the remarkable ability to absorb and retain large amounts of water, creating a reservoir that plants can tap into during periods of drought or when regular watering is not feasible. This unique feature not only ensures the survival of my plants during water scarcity but also minimizes the time and effort required for watering. One of the aspects I admire most about Miracle-Gro is their dedication to research and development. This commitment is evident in the effectiveness of the Water Storing Crystals. When added to the soil, these crystals slowly release the stored water to plant roots, providing a consistent moisture supply that supports optimal growth. The crystals gradually rehydrate as they come into contact with water, ready to store and release moisture as needed. This continuous cycle of water absorption and release helps to establish healthier root systems and reduce water stress, resulting in stronger, more resilient plants. I have found the Water Storing Crystals to be incredibly versatile, accommodating various gardening needs. Whether I'm nurturing delicate indoor plants, tending to my vibrant outdoor flower beds, or cultivating a thriving vegetable garden, the Water Storing Crystals adapt seamlessly to any setting. Their ease of use and compatibility with different soil types make them an essential component in my gardening routine. Additionally, the Water Storing Crystals offer a sustainable solution to water conservation. By minimizing water runoff and reducing the frequency of irrigation, these crystals promote environmental responsibility while maintaining the health and vitality of my plants. I appreciate the opportunity to contribute to water conservation efforts through my gardening practices, and Miracle-Gro Water Storing Crystals enable me to do just that. In summary, Miracle-Gro Water Storing Crystals have earned my utmost admiration and trust as an essential component of my gardening routine. Their ability to absorb and slowly release water, their versatility across various plant types, and their contribution to sustainable gardening practices make them an invaluable resource. As someone who wholeheartedly relies on Miracle-Gro products for my gardening needs, I confidently recommend the Water Storing Crystals to fellow garden enthusiasts. Embrace this secret weapon, and watch your plants thrive with less water and more resilience. With Miracle-Gro, you can trust in their expertise and witness the transformative power of their innovative solutions for gardening success.

### ⭐⭐⭐⭐⭐ Very helpful in hot climates
*by I***R on December 30, 2025*

These water-storing crystals worked exactly as expected. I mixed them into potting soil for outdoor plants and noticed the soil stayed moist longer between waterings, which is especially helpful in hot weather. They’re easy to prepare and expand quickly when hydrated. A little goes a long way. Great option for anyone trying to reduce watering frequency or help plants through dry spells.

### ⭐⭐⭐⭐⭐ Happier plants
*by R***J on January 2, 2026*

small bag but you do not need much! These are so cool! I use them in some of my flowerpots that do not have drainage or my 4" or smaller pots since they need watered so muuch more often. These help those plants stay happy.

## Frequently Bought Together

- Miracle-Gro Water Storing Crystals, Helps Prevent Over and Underwatering in Outdoor and Indoor Plants, 12 oz.
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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-03-12*