We don't ''amend our soil'' in the UK. We just chuck a bit of cow/horse muck in, well rotted, when we can get it. We use stuff like old mushroom compost and leaf mould as well as our own compost to sling on the top.
When my grandchildren from Australia visited, one of them said ''nanny I like your ''yard''. I told them it's a garden, not a yard
.. nanny and grandad had a yard behind their terrace house. It was situated just outside the scullery and there was a mangle in it to wring water out of the washing. There was also a ''lavvy'' a WC without flush with two seats - one for her and one for him!
When USA members talk about their yards this is the picture that flashes through my memory.
Here's a picture of a typical ''lavvy''