it will be on the south side of my house, and i live in zone 5 ( dont know if that matters). here is the garden that i am going to try to build. it is the second one down http://www.dnr.state.mn.us/gardens/butterfly/designs.html how do i get the soil ready for the plants? and do i put mulch in around the plants? ive never had a garden before so im kinda just learning. i am going to go get a book from the library next week, but i want to see if i can even afford to try to build a garden like this. also if you look at the size scale of that garden, it is the same size as the area i have to use. about how many plants of each of those flowers should i purchase? i have been told that most of those spread, so should i just buy like 1 or two plants of each or should i try to plant seeds? any ideas are appreciated? thanks