What is more important is what is available within your area. Check with local Bonsai clubs, it will save a lot of time. Unless you have the resources to purchase and store bulk products most other options will be difficult. Look for suppliers of Lava, pumice, sand and gravel. Bagged products can be found at industrial suppliers for the well drilling industry. This usually requires bulk purchases.
Sorce knows the source!
Definitely do, if for no other reason than to look at their trees. They have some really cool collected material there, so even if you don’t wind up buying stuff, it’s always fun to look around.
Or if you're like me in order to build immunity snort a line of D.E. dust occasionally to get your mind right.
Don't forget to ask them for 10% off. I bought many gallons from them.
I put a couple handfuls under a tarp and hit it with a hammer. Then I through a couple sieves to get the same sized ones together and repeat until I have enough of the size I need. I can get between a couple quarts to a gallon of various sizes in an hour. It’s fine for if you only have smaller trees but becomes less worth it the more you need.
