Red Lava Scoria Bonsai Soil Substrate

  • $30.00
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SuperFly Bonsai's USA Red Lava
Red Lava is commonly used in bonsai as an additive to soils. While lava would be a pretty good medium to promote tree growth by itself as it drains very well, it is best to use it in a mix. Lava will also help prevent soil compaction in your mix and give it structure.

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?
USA Red Lava is a solidified molten rock that was formed after molten lave cooled from a volcano.  The color of the lava was decided by the temperature of the flow and by the chemical composition which includes any impurities that may have found it's way into the flow.

How Do I Use It?
Repot your bonsai tree in this mixed with other bonsai soil amendments (most common are akadama and pumice) to promote great moisture retention and drainage. 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

Washed vs Unwashed
We offer both washed and unwashed lava.  We only offer unwashed in the red lava.  Black lava has both washed and unwashed.

The washed lava is a premium product that has been sieved twice and washed.  This lava is very clean, dark uniform black and has virtually no dust.  We use the washed lava in all of our premium soil mixes.  The washed lava is more because it is perfect and 100% ready to go.

We also have black lava!

The unwashed lava has been sieved once and dust will be in the bag, the majority of the product will be the size listed.  I highly suggest sieving the lava inside a tub of water.  This will clean the remaining dust and will cause minimal dust to enter the air.

Please Note: Do not breath the dust from lava as it is very abrasive and not good to get in your lungs or eyes. We sifted the majority of the dust out of the lava prior to bagging, however more will be created in the shipping process. It is recommended to utilize a dust mask whenever dealing with lava dust.  If you purchased unwashed lava, I suggest sieving it in a tub of water or just water your tree in well and most of the dust will just fall out of the drain holes.

  • Ready To Use - Sifted Prior To Bagging
  • Promotes Excellent Drainage & Water Retention - This Lava is used by bonsai professionals around the world and has been found to drain well while holding the proper amount of moisture that bonsai need.
  • This is high quality USA Lava that has been sifted to a uniform size.
  • Easy Zip Resealable Bag for the 1.25 and 2.5 quart sizes - Simply tear off the top then reseal the easy to close resealable bag over and over until you are ready to re-order soil.
  • 100% Money Back Guarantee - If you are not 100% happy with this product, we will refund you in full.

Customer Reviews

Based on 22 reviews
William Jhun (San Jose, US)
Great Bonsai soil source!

My new purchase was a hit and went very smoothly. Thank you so much!

Best-William Jhun

Chris (Miami, US)
Lava Rock

This is the lava rock I’ve had such a hard time finding online or anywhere else and to find it at such a good price. I’ll definitely reorder in the future. Shipping was faster and easier than I expected as well.

M. Z. (Lexington, US)
Superior red lava

I've only recently started adding lava to my soil mixes. so I was making my first substantial (for me) purchase. I'm quite used to finding lots of size variability in large bags of soil components and I was expecting more of the same. Was I ever surprised! Other than minor dust, I don't think there were any undersized particles in my purchase and the sizes were remarkably consistent. I have several large juniper bonsai to repot, so I expect to burn through my two large bags quickly and look forward to placing my next order.

Mike Weinmann (Riverton, US)
All is well

Lava is a good size. Of course it needs to be rinsed, but is doing it’s job

Roxanne Kingsland (Spartanburg, US)
Red Lava bonsai soil

Excellent lava for my soil mixes to create for my bonsai. Also a great deal!


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Thank you for your purchase. We hope you are happy with your items! However, if you are not completely satisfied with your purchase for any reason, you may return it to us for a full refund, store credit, or an exchange. Please see below for more information on our return policy.


All returns* must be postmarked within thirty (30) days of the purchase date. With the exception of returns for broken/damaged items, all returned items must be in new and unused condition, with all original tags and labels attached.

*Plants + Trees Returns: By purchasing a tree from us, we assume you know how to properly care for the tree. Bonsai and other plants are alive and will die if not properly cared for. We have no control over how trees are cared for once in your possession. Therefore, by purchasing this tree, you acknowledge that we, the seller, provide no warranties expressed or implied after the tree is delivered. This tree is sold "AS IS" and this sale is considered final. No refunds or exchanges will be offered after the tree is purchased. We will only ship healthy trees. We will require a signature on most trees over $100USD. If the box arrives damaged, please take pictures and make note with the shipping company prior to signing. If you sign for the package, the sale is final.


For the easiest way to process returns purchased through our website, please visit:

For items purchased through Etsy, please include the item and invoice # and return to:
Superfly Bonsai
1670 S. Cameron Street
Harrisburg, PA 17104

For items purchased through Amazon, Walmart, or eBay, please visit the vendors website. Linked below is information from each vendor to get you started.
Amazon: click here
Walmart: click here
eBay: click here

Please note, you will be responsible for all return shipping charges.* We strongly recommend that you use a trackable method to mail your return.

*Certain returns may be eligible for shipping charge reimbursement. We reserve the right to refuse refunds on shipping charges based on reasons for return.


Once we receive your item, we will inspect the condition of the items and notify you that we have received your return. We will also notify you on the status of your refund after we've inspected the item.

If your return is approved, we will initiate a refund to your original method of payment. You will receive the credit within a few business days, depending on your card issuer's policies.


If you have any questions concerning our return policy, please contact us at:

*Management reserves the right to refuse a refund, exchange or the resale of any item based on the condition of the merchandise.

Shipping Policy

Order Processing

All orders are processed within 2 to 3 business days (excluding weekends and holidays) after receiving your order confirmation email. You will receive another notification when your order has shipped.

Plants + Trees Shipping: Shipping may be delayed to prevent the tree from sitting in a warehouse over a weekend or holiday. Most trees ship Monday-Wednesday. We do not ship trees to PO, FPO, or APO boxes. We also do not ship trees out of the continental US or to California.

Domestic Shipping Rates and Estimates

For calculated shipping rates: All orders (under $99 USD or Wholesale) will be presented with shipping options that are calculated based on the item weight, box size, and distance from our shipping location.  We currently only use Fedex.
Free Shipping: All RETAIL orders over $99.00 USD ship free within the continental USA. Free shipping will be the lowest cost option from FedEx.

In-Store Pickup

You can skip the shipping fees with free local pickup at our warehouse. We are located at:
1670 S. Cameron Street
Harrisburg, PA 17104

We will send you an email when your order is ready along with instructions.
Our in-store pickup hours are 10AM-4PM Monday-Friday. Please have your order confirmation email with you when you come.

International Shipping

At this time*, we do not offer international shipping.
*Shipping to Canada and Mexico will be available at some point in the near future. Check back for updates to this section.

How do I Check the Status of my Order?

When your order has shipped, you will receive an email notification from us which will include a tracking number you can use to check its status. Please allow 48 hours for the tracking information to become available.
If you haven’t received your order within a reasonable amount of time, please contact us at with your name and order number, and we will look into it for you.

Shipping to P.O. Boxes

FedEx: FedEx will only ship to P.O. Boxes with SmartPost, which we do not offer at this time. Click here for more information.

Refunds, Returns, and Exchanges

We accept returns that are postmarked within thirty (30) days of the purchase date. With the exception of returns for broken/damaged items, all returned items must be in new and unused condition, with all original tags and labels attached.
In the event that your order arrives damaged in any way, please email us as soon as possible at with your order number and a photo of the item’s condition. We address these on a case-by-case basis but will try our best to work towards a satisfactory solution.
If you have any further questions, please don't hesitate to contact us at

Large Orders

If you are a placing a larger order (over 30 bags of soil or many pots), it may be cheaper to ship via freight truck. If you are interested in pricing for this, please contact us here.

Show Pickup & The Superfly Express

We attend 7-10 shows a year (if not cancelled), mostly on the east coast. Please check our calendar to see if we may be attending a show close to your location, and we can arrange to bring your order for pickup at the show.  No minimum.

We started the Superfly Express shortly after the Covid-19 pandemic started.  We did this as a way to get products to wholesale customers with no shipping fee.  We basically will deliver your order on one of our trips to your area for free if the order is over $1000 and you are close to our route.  We will also deliver retail customers orders over $1000 if they don't want to utilizer our free shipping for whatever reason.  We currently only travel east of the Mississippi river and have 4 routes.
1.  New York/New England Area
2.  Ohio/Michigan/Illinois/Indiana Area
3.  Western virginia & NC/Tennessee/Alabama/Mississippi/Kentucky
4.  Maryland/Eastern Virginia & NC/SC/Georgia/Florida

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