Clay, sand, silt, loam: How different soils affect gardens By now, you probably know what kind of soil you have out there in your “back 40.” ...

When this happens, you start to see the color of the different grains of sand in the brick. This is a subtle, slow process, and you rarely recognize it at first.

OILS ain’t oils and soils ain’t soils — at least not it seems when it comes to some of Australia’s more challenging sand and clay soils.