I have several of this species, it blooms really good on the first flush and it last a long time. after I prune it back it does bloom again and even a 3rd time but both are not as good as the first bloom of the season. it gets to about 24 to 28 inches high and around 2 to 2.5 feet around the circumference at maturity. overall it is a nice addition to the garden and I will always have some in my cottage gardens.