I'm a bit too lazy to hunt for the best dirt, I figured I'd just go into my back yard.
Although after reading about how it's best to have an even mix of different soil particle sizes, I was very strongly tempted to use the DVC material science lab's test sieves and shaker to make my own soil. Usually they're used to test the distribution of different size particles in a soil, but if I just kept adding soil until I collected enough of each general particle size, I could basically make my own soil mix. It wouldn't have the properties of different minerals, but an ideal particle size mix could be obtained. But still, laziness tends to trump geeky inspiration.
no subject
Although after reading about how it's best to have an even mix of different soil particle sizes, I was very strongly tempted to use the DVC material science lab's test sieves and shaker to make my own soil. Usually they're used to test the distribution of different size particles in a soil, but if I just kept adding soil until I collected enough of each general particle size, I could basically make my own soil mix. It wouldn't have the properties of different minerals, but an ideal particle size mix could be obtained. But still, laziness tends to trump geeky inspiration.