THERMOROCK 2 cu. ft. Medium Grade Vermiculite Soil Amendment-489702 - The Home Depot


Model # 489702

Internet # 202187625

Store SKU # 217047

2 cu. ft. Medium Grade Vermiculite Soil Amendment

THERMOROCK 2 cu. ft. Medium Grade Vermiculite Soil Amendment

This item has been discontinued.
The Home Depot no longer carries this specific product.

$20.97 / each


Model # 489702

Internet # 202187625

Store SKU # 217047

This THERMOROCK 2.0 cu. ft. Vermiculite is an organic, asbestos-free soil amendment that can be used to improve moisture retention and aeration in potting mixes. It helps support root structure and stimulates root growth.

  • Use to improve moisture retention and aeration in potting mixes
  • Supports root structure to stimulate fast root growth
  • Organic soil conditioner registered with the Organic Materials Review Institute (OMRI) for earth-friendly gardening
  • Certified asbestos-free for safety

Info & Guides

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Assembled Depth (in.)  34 in  Assembled Height (in.)  4.5 in 
Assembled Width (in.)  16 in 
Bag Capacity/Dry Volume (cu. ft.)  2 cu ft  Organic  Yes 
Returnable  90-Day  Soil Amendment Type  Other 
Warranty / Certifications
Manufacturer Warranty  None 


Rated 4.7 out of 5 by 96 reviewers.
Rated 5 out of 5 by Very good for our hard clay type soil. I have never been able to grow vegetables so successfully before. We use it in our "high tower" type greenhouse which we planted in March. I have spinach like I never had before along with kale, beets, radishes, lettuce and carrots. I have started all my plants to put outside using vermiculite mixed in with my soil. In my garden we just mix it in along the rows when we plant. And to think it is only May and we are enjoying our vegetables in NH. May 23, 2013
Rated 5 out of 5 by 1/3 of Mel's Mix for Square Foot Gardening - exactly what I needed I searched around for large bags of Vermiculite and landed at Home Depot Online for the best deal. The All New Square Foot Gardening requires Vermiculite as 1/3 of Mel's Mix - the essential mix of soil for this amazing gardening method. The Vermiculite is very light an airy, but holds water in close to the plants roots. It was easy to mix with the other ingredients and is exactly what I needed. May 29, 2012
Rated 5 out of 5 by Brick Oven Builders Hi All.... Anyone that has tried to build a brick oven will know that getting this stuff in large quantities can be very difficult. When mixed with portland cement... 6-1-1----- 6 vermiculite, 1 part portland cement 1 part water, this makes an incredible insulator for the dome...then covered with mortar or I used SBC (surface bonding cement) will keep the heat in for some fantastic baking.. Also can be used to line fire pits.. Thanks home depot for another great product, Just wish you would carry it in the stores,,,,, you can see in the pic that the oven is so well insulated the snow wont even melt... that was after 4 hours of fire... I wish they would start carrying Fire brick and heat stop mortar as well, then it could all be bought in one stop from a trusted friend....... August 23, 2011
Rated 5 out of 5 by Great product, great price--delivered to your door--who could ask for more :). <3 Home Depot I used this vermiculite in my sq. ft. garden. The product was the right one--organic. The price was reasonable, and Home Depot delivered it to my door--FREE!! My garden is doing well :) June 11, 2013
Rated 5 out of 5 by So impressed with what it does I found out that with my plants I was using too much potting soil by it's self, so I went u-tubing for a good plant mix, so I said what the heck maybe my plants will like vermiculite. I mixed this with perlite and regular potting soil repotted four of my plants and I must say, after 2 weeks my plants are finally getting growth and I'm getting the good drainage that I need. This is a keeper for me, $20 is a little pricely, but it costs way more to replace plants that drowned because the soil stayed very wet at the bottom. I'am going to go buy another bag very soon, because I love growing plants during the spring/summer. A must have for us plant growers. April 27, 2014
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