Ajuga Ajuga is a ground plant that is unique in its green leaves and blue flowers. Remember that its leaves take some space so it is preferable for it to grow in a garden. - See more at: http://www.pouted.com/top-10-flowers-that-bloom-all-year/#sthash.4yU65o7A.dpuf
Butterfly Bush, Lo & Behold 'Blue Chip Jr.' The next generation of Lo & Behold® 'Blue Chip', young Junior is smaller, less brittle, and has attractive silver-green leaves. Great for mass plantings, containers or mixed into perennial gardens. It flowers from mid-summer to frost. 18-24' x 18-24"