I'm brand new at growing delphiniums, but bought some of the NZ ones because they're supposed to take the heat better. They're not real tall, maybe 2.5 ft. They did fine - I had them on the east side of the house where they'd only get morning sun. I'm going to get more transplants next spring and try in a few other places as well.

Thanks will_work_for_roses. Where did you get the NZ delphiniums?
K