A quick add-on to my epic soil post (The much anticipated long promised long winded ever-lovin’ bonsai soil epic).
I have three products I’ve discovered that I’d like to share.
First, an expanded shale product that is not the Haydite brand-
In fact, it’s Ladybug brand-
Not very manly, I agree, but it’s available commercially in manageable bags (40 lbs) at a relatively cheap price.
It does have dust-
But only a few small particles to sift out.
A 40 lb bag yields five gallons worth of product.
And looks ok too.
The particles size is varied enough you could sift out the larger particles and have a good shohin mix.
If you remember from the soil post, I talked about a characteristic of soil particles called cation exchange capacity (pronounced cat-eye-on. C. E. C. for short).
It is basically the amount of “stickiness” a soil particle has in terms of fertilizers and other nutrients attaching to said particle.
This is important for bonsai because we have very little soil in our small pots and the soil drains so fast that any fertilizer you use just gets washed out of the drain holes whenever you water.
But….if the particles you use have a high C. E. C. the fertilizer will “stick” to them and be available for the plant to use.
Organic particles (like pine bark) have the highest C. E. C’s (but they break down and clog the drain holes so we use little to none in a mix) with rocks having no C. E. C (chicken grit, lava rock).
A comparison of C. E. C. For those interested.
Pine bark- 125/100g (you’ll have to read that first postfor an in depth discussion)
Turface (calcined clay) 25/100g.
What about this expanded shale, Haydite or this Ladybug brand?
It has little to no C. E. C.
why, then, use it?
The same reason we use lava; to take up space.
I believe in a varied mix with different shaped particles;It just drains better in my opinion.
The next product is a diatomaceous earth product I found at O’Reilly auto parts.
A close look-
Diatomaceous earth (D. E.) is basically fossilized microscopic creatures that lived in fresh water (diatoms).
It has excellent C. E. C. (27/100g) and doesn’t break down unless you crush it.
What is the difference between this product and the NAPA auto parts brand (part #8822) I referenced in the first post?
The particles in this Optisorb are bigger with less waste after sifting.
5 quarts before:
A little more than 4 quarts after sifting:
The bag yields about 5 gallons of sifted product. Not bad.
It’s big drawback is the color; white.
But the new fad, pumice, is white too.
And Boon uses pumice so the color shouldn’t matter then, right?
The part number for Optisorb?
The next product is called Soil Perfector.
It doesn’t say what it is made out of (except a “natural ceramic material”, Making me think it’s shale).
You do have to sift or wash it as there is some dust in it:
The bag is 27 lbs but the product is lighter than the Ladybug product (40 lbs) at only one gallon less yield.
I also like the sharper edges it has compared to the Ladybug product.
Going back to the original post, I realize that I had introduced the Ladybug brand expanded shale already but, I’m still trying to get the word out about and I didn’t want to have to erase half the post.
I’ve had half a year using it and I’ve found it to be a satisfactory component.
It doesn’t hold too much water and those trees I’ve had in it have grown the most (it’s been a wet year).
The Soil Protector product seems very promising to me. I’ll give an update on it next year. I plan on using a mix with it, the Optisorb and some recycled soil in some junipers.
Here’s the look of it:
It should work.
For more info on my regular soil mix, this post (how I make bonsai soil) is a good reference.
All of these products are searchable on the Internet and should be easy to find (hopefully).
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