Superdite - Expanded Shale - Black Haydite - 13L Bag (@3.5 Gallons)

  • $30.00
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Superdite (expanded shale - haydite)
Superdite is commonly used in bonsai as soil for many different types of trees. You will find superdite primarily in bonsai soil mixes as it helps allow air to the roots, prevent compaction and it retains water while releasing it slowly to the roots.  

Superdite is basically just haydite from a mine that sieves and sizes this perfectly for our use.  Superdite is black in color and looks similar to black lava without the holes.

Is It Dirt?
No. Bonsai trees do not like "dirt" and will in most cases die if left in dirt over long periods of time. This is substrate.

What Is In It?
Superdite is produced by expanding and vitrifying selected shale in a rotary kiln at temperatures in excess of 2000°F.  This Superdite is sourced in the northeast.

Repot your bonsai tree in this soil or mix it with other bonsai soil amendments to create your own soil. Be sure your bonsai pot has holes in the bottom covered by bonsai mesh.
Each micro climate may require different amounts of water. On very hot/dry days you may need to water two/three times while around freezing you may need to water just once per month. Push your finger 1" into the soil and feel for moisture. If it is dry, it is time to water.
2.5 Qt = @ 12 Cups
1.25Qt = @ 6 Cups


Customer Reviews

Based on 4 reviews
On time and as promised!

I like it!

Perfect size and clean

No dust,ready to be use.

Love this color Haydite!

Looks amazing and doesn’t break down fast if at all. Very small amount of fines. This color looks awesome!!

Purchased Bonsai Components

I purchased about a dozen bags of different components to make up different bonsai mixes. The components were as described; the right size particle and little to no dust. I plan on buying from Superfly again when I need more.


Ask a Question
  • how big is the particle size?

    The majority of the pieces are 1/8 to 1/4".

We utilize several different carriers to provide accurate shipping rates. Rates are calculated by distance, weight and package dimensions. A custom shipping quote will be provided in the shipping section during checkout.

In most cases we ship the same or following business day.  If we are closed for an extended period we usually state that items will not ship until the date we return.

Free Shipping
Superfly Bonsai currently offers Free Shipping for All Retail orders over $75.00

Plants & Tree Shipping:
We ship bonsai trees and plants from either our parnter nursery or our in house nursery depending on the tree.  We may limit when we ship trees to help limit their exposure to extreme environments.  For example we may not ship if it will cause the tree to sit in a truck over a weekend or holiday.

Many trees are shipped by Fedex from our partner nursery in the south central united states.  Expect delivery to the West Coast to be 4-6 Business days via Fedex Ground.  To the rest of the continental USA it will take 1-4 Business Days.  Please contact us if faster shipping is needed.

If we are shipping from our Harrisburg, PA location, the tree may arrive via any carrier, but usually UPS or USPS.  Delivery is the same as above as far as time in transit.

Trees are shipped in custom boxes made just for shipping trees.  Sometimes we wrap the pot and soil in plastic to prevent it from spilling out in transit.  Many times we use packing peanuts as they have proven to be very reliable in keeping trees safe in shipping.  If a box is noticiably damaged, please take pictures prior to opening.

If you are not 100% satisfied with your purchase from Superfly Bonsai, simply contact us to arrange a return.  Items must be returned at your expense.  If you beleive that we messed up somehow please let us know and we will evaluate the situation on a case by case basis.  When a return is authorized simply send the product back in sellable condition for a full refund of the product cost.

Return Address:
1670 South Cameron Street
Harrisburg, PA 17104