When I started my gardens years ago, I wanted all Daylilies but I soon tired of that when all the color was gone early in the season. I have done a lot of experimenting and tossing out, but I think I am pretty happy with things now. I grow tall asiatic lilies in the center portion of the beds so the stems will be hidden as they fade. I absolutely love the Tiny series of these and spot them all over near the front edges of the gardens. They clump up so fast and last so long. I have close to 30 different varieties of those. I spot those gorgeous coneflowers in many spots depending on height. My new favorite filler flower is helenium which is a hardy perennial that is available is different heights and colors and blooms from late summer until frost. It has a daisy like flower that comes in reds and shades of oranges and rust. For fall color, I just love the blackberry lily which is so interesting. It is tall, so I put seeds in empty spots around the garden but more towards the center. It looks wonderful and it's seed heads add so much to the fall landscape. I also put clusters of zinnias around the outside edges of the gardens wherever there is a bare spot. I started out with a few sedum plants mixed in, but got so interested that I have a seperate sedum garden now and collect all the different types I can find that will grow here in MN.