Growing Plants from Seed

I have a client who wants a very flower abundant garden. Very English cottage meets field of flowers kind of thing. This has been a new kind of project for me as most of my clients prefer a more structured and controlled looking kind of feel. I am personally inclined to the natural and wild looking garden.
I was surprised to find that this "easy looking" style of gardening required just as much work as the more formal garden. Which is funny, because you would think there would be less maintenance! Ha!
You still have to weed out invasive and unproductive weeds. You still have to split and divide plants. You still have to plant for the best location. Watering and pest control are still on the munu. Etc. Etc.
One thing I am doing with this garden, though, is using and broadcasting seeds. And that is something I don't usually do as seeds can be kind of hit or miss depending on if people are using things like Preen in their garden. Overzealous weeding...etc. etc.
I came across this useful link describing what time of year it is best to broadcast certain seeds...
http://flowergardens.suite101.com/article.cfm/fall_sowing_of_seeds_in_the_flower_garden

I found it very helpful...I think you will too.

P.S. Check out our gazing globes and very cool looking ceramic bird houses at Cool Garden Things

Need Help To ID this Plant

I was weeding a client garden...and over the last month I noticed this problem which I promptly attempted to ignore. But can no longer ignore!!! If anyone can help me to identify this Michigan late season blue/purple flower perennial and the disease and what to do...I would be very grateful!

Thanks, GartenGrl at Planning Plants to Plant