Wish I could help you Kim, but I really don't have other plants in with my iris. I have peonies that bloom along with the iris. For after iris bloom I have sections of garden with lantana (that blooms continuously for months here) and canna that are always in bloom until October or so. The canna spread slowly and start coming up after the iris are mostly done blooming so I have them on the edge by an iris garden. Glads can work too because they start much later than the iris. Still striving for perennial summer bloomers. Even if I don't buy a bunch from them Plants Delight has a great site full of perennial summer plants to give you some ideas. They grow everything in Raleigh so most of their plants do well in NC. I did get my lantana Miss Huff from them and each year it comes back. I do have to trim mine back a few times a summer because it gets about 4 feet tall and four to five feet wide. The trimming never hurts it in the least. Attracts tons of butterflies!
