My backyard area I want to convert to all flower garden just like a veggie garden but flowers, It is 30 by 15. So I am guessing this is the process. Start by spraying the lawn with round up now before it gets too late. I want it to be as ready before winter hits here in zone 7 Oregon. So then I would do what to prepare it ? I know about amending it greatly and tilling it, but when would I do these things and in the areas that are only dirt now, should I water them to start making them softer ? I'm not sure, but I hope someone comes along that has an idea of what I want to do. I know how to grow flowers,I have been growing them and selling them for 15 years, but I don't know what to do at this time of the year to get it as ready as possible to stick the seeds and plants in in the spring, ? thanks