Monto Clay®, short for Montmorillonite clay, is a fired clay product used to amend soil. Montmorillonite is sold under other brand names such as Turface MVP®. The advantage of Monto Clay is the 1/...

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Monto Clay®, short for Montmorillonite clay, is a fired clay product used to amend soil. Montmorillonite is sold under other brand names such as Turface MVP®. The advantage of Monto Clay is the 1/4 inch particle size. 1/4 inch particles prevent dry spots, poor drainage and settling which can cause acidic shock. Monto Clay is ideal for use in bonsai soil, cactus soil, succulent soil, hydroponics and amending soil to increase drainage.
Montmorillonite is known for its cation exchange capacity(CEC). It's also a great acidifier. The acidic properties help offset the alkaline properties of other ingredients such as pumice and lava rock.

Material : 1/4 inch Monto Clay (Montmorillonite clay)
Color: Light Brown
Bag Size: 3.5 Gallon (14 Quarts Dry)
Bag Volume: Net 940 cu in
Bag Weight: 17 lbs
Average Size: ¼ Inch
pH: 5.6
Minimum Size: 1/8th
Maximum Size: 3/8ths
Application: Soil Amendment
SKU: 799600831236
Condition: Screened, Tumbled, Dried and Bagged.

Did you know?
All of our soil products are state inspected and tested on a regular basis in order to comply with multi-state regulations.
This ensures you receive material free of dangerous pathogens that can damage or kill plants. This is also required to maintain six nursery stamps that allow us to ship to all 50 states.



  • Similar properties of hard Akadama.
  • Uniform 1/4 inch Particle size prevents dry spots, poor drainage and settling.
  • Acidifying soil amendment
  • Pathogen free high fired clay
  • Available in 2 Quart, 1 Gallon, 2 Gallon, 3.5 Gallon, 7 Gallon, 14 Gallon and 28 Gallon SKUs

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