You cannot go wrong with any of the Siloam series of dayllies. Here is Siloam Paul Watts, a later blooming red that puts out a wonderful display into October here. Not a large flower but lots of flowers.
Bottom middle is Lakeside Kaleidioscope. Spring is the only time you see this plant look good. Many gardeners have removed it from their garden but I leave it here as my display is a teaching garden too where the good grows with the not so good and the down right terrible.