Clematis heracleifolia “Cassandra” is a shrubby, easy to grow clematis – not a climber. It can bloom through the summer and into fall, and it is apparently very fragrant in bloom. We bought one of these (in bud) at Lost Horizons and planted it in the canoe. This plant can handle part shade to sun. Where it is in the canoe, it gets more sun that you might expect between the house and the locust tree. Very close to this location, peonies and poppies have done very well.