Jessica, you have some really good ideas, thanks. I did not think of providing some perches for the little birds. Thanks, Helen. I love the Butterfly Bush, but I don't think I will have enough room on the patio railing for that. My patio wall is 5' high and the railing is only 6" wide. I will have to use some planters that are long and narrow and only about 8" deep, so there will not be enough soil for larger plants. I will probably have to just get some smaller plants like lobelia and petunias, salvia, snapdragons (the small ones). I am tempted, though to try the Butterfly Bush.