Rototill the weedy patches and plant your favorite shrubs this fall. Fall is for planting, but don't wait too long. There are lots of shrubs that look like boxwood. It's a good way to begin a new garden. I do have some dappled sun though.
Dappled sun is good.
Our summers are too hot, and many perennials that require full sun in fact do better in dappled sun or shade. Hydrangeas for instance like morning and evening sun but shade between 11 am and 3 p.m. As long as they get sun til 11 am and then a bit more in the late afternoon, they will bloom, and they will be healthier than those that get sun all day. Don't be sad about lots of shade. To be on the safe side, leave a few leaves on top.