My daughter's in MI and that's what she does instead of trying to amend. Not that she can't, but she's always IN A HURRY! She'll learn. But I've gotta say, her flowers look a heck of a lot better than mine ever have!
I grow most of my stuff at my son's and he's really big into amending and building the soil. It's just s o o o o s s l l o o w w