Do you have a friendly neighborhood? I remember planting some lilies in the front yard, and someone cut it off. Unbelievable.

Mass planting of African daisies (osteospermum) would look nice - they flower throughout winter. Lavenders would match the color of the fence too.

Can't believe that you don't have100 posts! What a perfect spot. I assume that this is on a corner, so I would be careful about road salt, but I would plant a mass of lilies/tulips etc. Start by mapping out the various lily heights and bloom time (lots of info on sight about bloom time!) I wouldn't do osteospermum as it doesn't bloom in mid summer, only spring and fall and th rest of the time is a mass of green. Sun or shade, some hosta in the front would look nice and tall phlox in th back. Being so open at least you don't have to worry about ground hogs or deer.--- Faye in MD