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Miracle-Gro Expand 'n Gro Concentrated Planting Mix, Just Add Water for up to 3X Expansion, For Container and In-Ground Use, .33 cu. ft. Expands up to 1 cu. ft.
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Return this item for free
We offer easy, convenient returns with at least one free return option: no shipping charges. All returns must comply with our returns policy.
Learn more about free returns.- Go to your orders and start the return
- Select your preferred free shipping option
- Drop off and leave!
Purchase options and add-ons
Brand | Miracle-Gro |
Style | Garden,Planting Mix,Potting Mix,Potting Soil |
Item Weight | 6.1 Pounds |
Item Volume | 0.05 Cubic Feet |
UPC | 032247073349 |
About this item
- Miracle-Gro Expand 'n Gro Concentrated Planting Mix expands up to 3X when combined with water
- This planting soil substitute feeds plants for up to 6 months
- When used with potted plants, this potting medium's all natural fibers hold up to 50% more water than traditional potting mix and release it as plants needs it
- Apply this soil amendment to in-ground gardens to make your soil up to 40% lighter and create up to 90% more air space for plant roots to thrive
- One .33 cu. ft. bag of Miracle-Gro Expand 'n Gro Concentrated Planting Mix fills two 12-inch containers or covers 4 sq. ft. of in-ground area
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From the manufacturer

Use in Containers
Select Container & Fill
Select a pot with a drain hole and fill pot 1/3 full with Miracle-Gro Expand ‘n Gro Concentrated Planting Mix in order to leave room for soil to expand.
Add Water
Gradually add water and stir. Planting mix will expand completely when equal parts soil and water are combined and may take up to 10 minutes.
Plant!
Plant your flowers or vegetables. Miracle-Gro Expand ‘n Gro grows up to 3X bigger plants than native soil and feeds plants for up to 6 months.
Use in Raised Beds
Mix in Large Container
Place Miracle-Gro Expand ‘n Gro Concentrated Planting Mix in a large container, like a wheelbarrow, then wet and mix to expand. May take up to 10 minutes for soil to expand.
Pour into Raised Bed
The compressed coir will expand up to 3X when water is added. Pour the expanded mix into your raised garden bed.
Plant!
Plant your flowers or vegetables, then water thoroughly. Plant food is included in the planting mix and will feed your plants for up to 6 months.
Use in In-Ground Flower & Garden Beds
Apply
Spread a 1-inch layer of Miracle-Gro Expand ‘n Gro Concentrated Planting Mix over the area to be planted.
Mix with Existing Soil
Mix the concentrated planting mix with the top 4-6 inches of native soil. Miracle-Gro Expand ‘n Gro Concentrated Planting Mix creates up to 90% more air space in your native soil for plant roots to thrive.
Plant & Water
Plant your flowers or vegetables, then water thoroughly.
Frequently Asked Questions
Q. How do I use a concentrated planting mix?
A. Unlike traditional garden soils, this has special expansion qualities. In order to use the concentrated mix in containers, be sure to first add water to the soil until it is fully expanded–this will take time and multiple waterings and mixings before it is fully expanded. Be sure to see the specific instructions (above) for your planting project type.
Q. How does this product work?
A. This coir is compressed 3X to allow for magical expansion to full size. That means 0.33 cubic foot of this mix can get you up to 3X expansion!
Q. Can I buy this in stores?
A. This product can only be purchased online.
Q. What are the ingredients in this product?
A. This mix contains compressed coir and fertilizer.
Q. Where can I use this product?
A. Instructions vary for each location. Please refer to your specific planting type in the above instructions for containers, raised beds, or in-ground garden beds. Read the product label instructions for specific usage directions.
Q. What should I plant?
A. This mix works with a wide variety of plants! Just make sure to follow the directions for your location and then plant your favorites.
Product guides and documents
Product information
Product Dimensions | 15.5 x 11.5 x 3.5 inches |
---|---|
Item Weight | 6.06 pounds |
Manufacturer | The Scotts Company LLC |
ASIN | B01N1UXYCC |
Country of Origin | USA |
Item model number | 70733430 |
Customer Reviews |
4.4 out of 5 stars |
Best Sellers Rank |
|
Is Discontinued By Manufacturer | No |
Warranty & Support
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Miracle-Gro Expand 'n Gro Concentrated Planting Mix, Just Add Water for up to 3X Expansion, For Container and In-Ground Use, .33 cu. ft. Expands up to 1 cu. ft.
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Product Description
Grow your garden with Miracle-Gro® Expand 'n Gro® Concentrated Planting Mix. This planting soil substitute expands up to 3X when combined with equal parts water, and contains fertilizer to feed plants for up to 6 months. Use this gardening product with most plant types as a potting mix for container plants or as a soil amendment for in-ground gardens. All natural fibers hold up to 50% more water than basic potting soil. In addition, it makes soil in gardens up to 40% lighter and creates up to 90% more air space for plant roots to thrive. To use in containers, fill a pot with a drain hole about 1/3 full of mix. Gradually add water and stir. After mix has fully expanded, plant as usual. When using in gardens, spread a 1" layer of planting mix over the area to be planted. Mix with the top 4-6 inches of soil before planting as usual. Water plants thoroughly to finish. One .33 cu. ft. bag of Miracle-Gro® Expand 'n Gro® Concentrated Planting Mix fills two 12-inch containers or covers four sq. ft. of garden area.
Top Brand: Miracle-Gro
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This Item Miracle-Gro Expand 'n Gro Concentrated Planting Mix, Just Add Water for up to 3X Expansion, For Container and In-Ground Use, .33 cu. ft. Expands up to 1 cu. ft. | Recommendations | |||||
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Price | $18.50$18.50 | $19.99$19.99 | $17.99$17.99 | -10% $46.24$46.24 Typical: $51.39 | $8.99$8.99 | $23.99$23.99 |
Delivery | Get it as soon as Thursday, Jul 10 | Get it as soon as Thursday, Jul 10 | Get it as soon as Monday, Jul 14 | — | Get it as soon as Monday, Jul 14 | Get it as soon as Wednesday, Jul 9 |
Customer Ratings | ||||||
Sold By | Amazon.com | Amazon.com | Amazon.com | Esbenshades Garden Center | Amazon.com | Spreetail |
size | .33 cu. FT | 51 Quart | 16QT (2-pack) | — | 16QT | 40-Pound (1 Pack) |
style | Garden,Planting Mix,Potting Mix,Potting Soil | 51 Quart | Outdoor | Modern | Outdoor | Garden,Potting,Top Soil |
weight | 6.06 pounds | — | 13 pounds | — | 13.7 pounds | 1 pounds |
Important information
Caution: Avoid inhaling dust. Avoid contact with eyes and skin. Wash hands after use.
Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers find the soil mix easy to use, convenient, and appreciate that it's very light to move. The product works well for seedlings and helps plants thrive, with one customer noting it helped their garden and house plants bloom. The expansion capability and moisture retention receive mixed reviews - while some say it expands to about twice the volume and retains water well, others report it doesn't expand much and can be too dry. Mold growth is a concern for several customers, and opinions on value are divided between those who find it worth the money and those who consider it not worth the cost.
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Customers are satisfied with the soil quality, reporting that their gardens are thriving, flowers grow rapidly, and plants love it.
"...good value for the money and mixes with regular garden soil easily." Read more
"Great soil for starting new plants and repotting the large ones." Read more
"...thing I read regarding this product's qualities: Great substitute for garden soil or potting mix...." Read more
"...Additionally, the limited nutrient content and higher cost compared to traditional planting mixes may make it less appealing for gardeners who want..." Read more
Customers find the planting mix effective, reporting it works perfectly for seedlings and goes a long way.
"...This works perfectly, as with water it expands to a larger size while keep the soil bag small enough to fit in my closet...." Read more
"This stuff is incredible. A few weeks ago, I planted two tomato plants in large pots- side by side on my patio...." Read more
"...it at best 2x expand but the plants I put in the pots are happy and thriving and it holds water really well as coco coir does" Read more
"...It matches other MG products in quality...." Read more
Customers appreciate that the soil mix is lightweight and easy to carry.
"Each bag weighs surprisingly little and the soil expands as advertised, but I'm still not sure what to make of this product...." Read more
"...But this is a game changer! It’s so much lighter than regular soil. It also does exactly as it says and expands more than double, when you add water...." Read more
"...This package was very small and light, has no odor and since it's not soil I wasn't uncomfortable working with it in my kitchen...." Read more
"...My plants grow bigger, faster, and the stuff is a lot LIGHTER than soil, too...." Read more
Customers find the soil mix easy to use, with clear directions and convenient handling, particularly noting it works well indoors.
"...While it has some benefits, such as convenience and the ability to expand up to three times its size, there are also a few **negative aspects** that..." Read more
"...I had extra dirt. Quality you expect from Miracle Grow, convenient, easy to store and easy to carry...." Read more
"It’s coco coir with a fertilizer mixed in which is great for people with little experience or no time to mess around with fertilizer the thing I was..." Read more
"...Carrying it from front step to back yard for gardening is so easy, and once the soil is wet, it expands to about twice the volume--herbs from seed,..." Read more
Customers have mixed experiences with the soil's expansion capabilities, with some reporting that it expands to about twice the volume when water is added, while others mention that it does not expand at all.
"very fluffy, seems to hold water longer than regular container filler. good value for the money and mixes with regular garden soil easily." Read more
"...fertilizer the thing I was disappointed with was it says expands up to 3 times well.. mine didn’t it at best 2x expand but the plants I put in the..." Read more
"...This works perfectly, as with water it expands to a larger size while keep the soil bag small enough to fit in my closet...." Read more
"...the growth of my plants since I just planted them, but it does not expand very much." Read more
Customers have mixed opinions about the soil mix's value for money, with some finding it well worth the price and others considering it not worth the money.
"...Additionally, the limited nutrient content and higher cost compared to traditional planting mixes may make it less appealing for gardeners who want..." Read more
"...good value for the money and mixes with regular garden soil easily." Read more
"Not worth the trouble. I can't rate the growth of my plants since I just planted them, but it does not expand very much." Read more
"Too expensive for a teeny bag of dirt, you get it cheaper Lowe’s for a huge bag" Read more
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Top reviews from the United States
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- Reviewed in the United States on June 29, 2025Size: .33 cu. FTVerified Purchasevery fluffy, seems to hold water longer than regular container filler. good value for the money and mixes with regular garden soil easily.
- Reviewed in the United States on April 13, 2025Size: .33 cu. FTVerified PurchaseGreat soil for starting new plants and repotting the large ones.
- Reviewed in the United States on October 17, 2024Size: .33 cu. FTVerified PurchaseI have a few small house plants that needed to be replanted, but I don’t have the space for huge bags of soil. This works perfectly, as with water it expands to a larger size while keep the soil bag small enough to fit in my closet. My plants liked it and it was fresh clean soil. No bugs or gross stuff.
- Reviewed in the United States on May 24, 2021Size: .33 cu. FTVerified PurchaseFirst thing I read regarding this product's qualities: Great substitute for garden soil or potting mix. After purchasing 5 bags of this product and planting my 3 ea./20" containers I've learned that this is a soil additive. Everything is already planted and in place. Now all I can do is cross my fingers and hope my plants thrive. How misleading to advertise as a soil substitute! Hoping to ensure healthy plants I have combined a topping of chopped hay, Organic Worm Castings - All Natural Soil Amendment, Soil Builder, and Fertilizer, 3 Pound Bag, black dirt and no float Cyprus mulch. Also mixed hay mulch in the planting mix as well. Added Jobe's 06328 Bone Meal Fertilizer Spikes, 50, Natural and utilized Safer Brand 5450-6 Garden Fungicide Ready to Use 32 Ounces as a safety upgrade to stop any mulch mildew, etc. Now what to do next year as these are perennials and I do not have available free dirt of my own as I live in an apartment. What I should have done in the first place is purchase black dirt and combined that with this product. Ugh, always one step forward and 50 steps back. Hoping that my patio garden has not become my money pit :( I have begun my begonia bulbs indoors with the assistance of the Grow Light for Indoor Plant Growing LED Grow Light 9 Dimmable Settings, Horizontal Plant Growth Lamp for Indoor Plants with Red/Blue Spectrum, Adjustable Gooseneck, 3/9/12H Timer (Red). Included the Amazon product headings where applicable. Planted 04/29 and the growth rate varied while the very last one of 5 appeared on 5/30/2021. Next step is hang outdoors once the weather stabilizes with constant warmer nights, etc and wait for the blooms of my Non-Stop Begonia Red in my 14" Resin Woven Hanging Basket, Espresso Brown, Hangings Basket. My patio holds my hydrangea, dianthus, and these red begonias. Will update as the summer continues.
5.0 out of 5 starsFirst thing I read regarding this product's qualities: Great substitute for garden soil or potting mix. After purchasing 5 bags of this product and planting my 3 ea./20" containers I've learned that this is a soil additive. Everything is already planted and in place. Now all I can do is cross my fingers and hope my plants thrive. How misleading to advertise as a soil substitute! Hoping to ensure healthy plants I have combined a topping of chopped hay, Organic Worm Castings - All Natural Soil Amendment, Soil Builder, and Fertilizer, 3 Pound Bag, black dirt and no float Cyprus mulch. Also mixed hay mulch in the planting mix as well. Added Jobe's 06328 Bone Meal Fertilizer Spikes, 50, Natural and utilized Safer Brand 5450-6 Garden Fungicide Ready to Use 32 Ounces as a safety upgrade to stop any mulch mildew, etc. Now what to do next year as these are perennials and I do not have available free dirt of my own as I live in an apartment. What I should have done in the first place is purchase black dirt and combined that with this product. Ugh, always one step forward and 50 steps back. Hoping that my patio garden has not become my money pit :( I have begun my begonia bulbs indoors with the assistance of the Grow Light for Indoor Plant Growing LED Grow Light 9 Dimmable Settings, Horizontal Plant Growth Lamp for Indoor Plants with Red/Blue Spectrum, Adjustable Gooseneck, 3/9/12H Timer (Red). Included the Amazon product headings where applicable. Planted 04/29 and the growth rate varied while the very last one of 5 appeared on 5/30/2021. Next step is hang outdoors once the weather stabilizes with constant warmer nights, etc and wait for the blooms of my Non-Stop Begonia Red in my 14" Resin Woven Hanging Basket, Espresso Brown, Hangings Basket. My patio holds my hydrangea, dianthus, and these red begonias. Will update as the summer continues.Not labeled accurately - Beware
Reviewed in the United States on May 24, 2021
Images in this review
- Reviewed in the United States on September 18, 2024Size: .67 cu. FTVerified PurchaseThe **Miracle-Gro Expand 'n Gro Concentrated Planting Mix** is an innovative product designed to expand when water is added, providing more planting volume from a smaller bag. While it has some benefits, such as convenience and the ability to expand up to three times its size, there are also a few **negative aspects** that might be worth considering before purchasing. Here’s a breakdown of the drawbacks:
### **Challenges and Negatives**
#### **1. Uneven Expansion**
One of the most common issues with the **Expand 'n Gro** mix is its **uneven expansion**. While the product claims to expand up to 3 times its size, some users have reported that the expansion isn’t consistent throughout the mix. In some cases, certain portions of the mix will expand well, while other areas remain more compacted, leading to **uneven coverage** and potential gaps in your containers or garden bed.
#### **2. Needs a Lot of Water**
While the idea of adding water to expand the mix is convenient, the **amount of water needed** can be quite substantial. If you're dealing with a larger garden or many containers, the amount of water required to fully expand the product can be excessive. In areas where water is scarce or expensive, this could become a **costly and inconvenient** factor.
#### **3. Initial Texture and Dryness**
Some users have found that the product can be **very dry** and almost hydrophobic when first unpacked, making it challenging to fully wet and activate. This dryness can result in uneven watering, and you may need to mix or agitate the soil manually to ensure that all of it gets hydrated properly. The initial texture is also quite **coarse**, which may not be suitable for more delicate plants or seeds that require a finer growing medium.
#### **4. Requires Frequent Rehydration**
Once the product is fully expanded, you’ll need to **keep it hydrated** to maintain its volume and effectiveness. If the mix dries out, it tends to **shrink and harden**, which can negatively impact root growth and moisture retention for your plants. This frequent need for rehydration can be a hassle, particularly in hot, dry climates where the soil mix might dry out more quickly than traditional potting mixes.
#### **5. Limited Nutrient Content**
While **Miracle-Gro** is known for including nutrients in its products, the **Expand 'n Gro mix** has a **limited supply of nutrients** compared to some of their other potting mixes. The concentrated mix is designed to improve soil structure and moisture retention, but it doesn't have the same long-term nutrient content as some other planting mixes. This means you’ll likely need to **supplement with fertilizers** sooner rather than later, which could add to the overall cost and effort.
#### **6. Not Ideal for All Plants**
Due to its coarse texture and potential issues with drying out, the **Expand 'n Gro** mix may not be suitable for all types of plants. For example, plants that prefer a finer, consistently moist soil may struggle to thrive in this mix unless you’re diligent about watering and maintaining the soil's moisture levels. It may also not be ideal for seedlings or young plants that require a more delicate environment.
#### **7. Cost**
While the concept of getting more soil volume through expansion is appealing, the **price per bag** can seem high compared to traditional potting mixes that don’t require expansion. When you factor in the need for frequent watering and potential supplements for nutrients, the overall **cost-effectiveness** of this product becomes a bit questionable, especially for larger gardening projects.
### **Final Thoughts**
While the **Miracle-Gro Expand 'n Gro Concentrated Planting Mix** offers convenience and space-saving benefits, it does come with its share of challenges. The **uneven expansion**, **dry texture**, and **need for constant hydration** can make it more labor-intensive than initially expected. Additionally, the limited nutrient content and higher cost compared to traditional planting mixes may make it less appealing for gardeners who want a low-maintenance, all-in-one solution.
For those willing to invest the time in maintaining proper moisture levels and supplementing nutrients, it can be a helpful product, but for others, a more conventional potting mix might be a better option.
- Reviewed in the United States on November 22, 2024Size: .33 cu. FTVerified PurchaseI was a little skeptical at first look. Very lite, didn’t seem like there was near enough dirt for my flower box! Then I added the water and boom! I had extra dirt. Quality you expect from Miracle Grow, convenient, easy to store and easy to carry. My only suggestion is read the ratio of water vs dirt before using! I actually ended up with to much soil.
I was a little skeptical at first look. Very lite, didn’t seem like there was near enough dirt for my flower box! Then I added the water and boom! I had extra dirt. Quality you expect from Miracle Grow, convenient, easy to store and easy to carry. My only suggestion is read the ratio of water vs dirt before using! I actually ended up with to much soil.
Images in this review
- Reviewed in the United States on June 15, 2023Size: .67 cu. FTVerified PurchaseThis stuff is incredible. A few weeks ago, I planted two tomato plants in large pots- side by side on my patio. One using regular MIRACLE GRO soil and one using MIRACLE GRO EXPAND 'N GRO. Both plants are doing well- however the one in the EXPAND 'N GRO is almost double the size. I was so impressed I just ordered (and received) another bag of the soil. It holds moisture well and is a wonder for the plants planted in it!!!