Not a good mix IMO.
If you want to make your own try plain old garden soil 1 part, sharp sand 1 part, compost 1 part.
If your garden soil is very clayey add more of the other ingredients. If the pots need to be moved and you want to keep the weight down use pearlite instead of sand.

What you propose doesn't sound very good.

Visit a local soil supplier, usually outside city limits. Ask for their "landscape light" mix, which is what Milburger's in San Antonio calls it. $30/cubic yard, about 800 - 1000 pounds/yard, about 1/3 the price of cheapest potting mix at the chain stores. Milburger's dumped one load with their front-loader right onto my flat-bed trailer whose bed was full of my 7-gal empty pots!!

The only thing stupider than dirt is someone who shovels dirt needlessly! :)

Very nice black soil with a very high percentage of fine wood mulch, some sand, and stinks slightly of manuure. Drains very well. This is one grade below Milburger's "$$best" topsoil.

I've been using it for potting all my bananas, palms, castors, and will re-pot some sickly potted Ph. nigra and henon bamboo with it, mixing in some composted manure for an organic kick-start.

I know you fellows are right and I appreciate your posts. The fact is that the bamboo arrived, that I am a make-do, very low budget, experimental kind of fellow, and I figure that since bamboo grows all over the world, their soils vary considerably.

I found that I did have a little "garden soil," so I mixed it with some compost, coffee grounds, and mulch. When I potted up the bamboo, I threw in also some large chunks of styrofoam--and in a couple of the larger pots an empty gallon jug or two to lighten the final weight of the pots.

I guess this is a sort of "whatever" approach, but I'll see what happens. Maybe I'll let you know how it works out.

I don't mean to deprecate your advice; I just wish I had the money and time to follow through with it.

if you're going to use your yard or whatever soil for your planters, give you bamboo a good chance by adding in a some composted manure, only $3/50 lb bag at the big chain stores. It has cow manure cut with wood compost, organic matter your plants will appreciate.

Make sure you have something in there that will promote draining. Soil, decomp. granite, similar.