sigghhh....shipper couldn't come with my order of pumice. going to have to go with lava rock from the big box store. looks to be about an inch or so, should I break it smaller? also, will I need to wash / rinse it before I mix in?
Much appreciated!
I like to have a variety of sizes of lava rock in my mix. If you can't get the "finer" smaller particles from the landscape yard, then break down some of the larger rocks to 1/8 to 1/2 inch. And I rinse all my lava rocks. The amount of dust from those things are amazing.. Make sure you mix in evenly with your soil.
But then again I am a fanboy of lava rocks