I am in zone 6B and Arctic Lace does very well for me. It is a bit short and should be grown near or at the front of the border. The flowers are so beautiful and its blooms are plentiful. The flowers open perfectly and rarely are splotchy. It is a very good grower and bloomer for me eventhough I never feed it any fertilizer or compost. It's grown near a large tree and yet that does not seem to be affected by root competition. It is very fertile both in pod and pollen.