The only stipulation my wife has is that she would like it to have purple (aka grape) colored flowers. At first I thought she meant dark red or burgundy, but she does not like those shades. I would prefer something that has a long flowering season, can tolerate heat, doesn't need watered 3x a week, and preferably not needing deadheaded all the time.
The lower sill of the window is about 44" above the ground there, so I could have a row of something taller in the back, and something shorter in front. The area we have to work with is 31" wide, from the side of our house out to the edge of the sidewalk, and maybe 12' long. This will be the most visible area that people see if they walk to our front door, and I sort of feel like I have to make up for the onions I planted out by the mailbox.
Any suggestions? Thank you so much!