Posted: 27/04/2016 at 08:01
Buttercups,,yes Sundown is tough. had mine for several years now and its growing away this year too.
Overwintering echinaceas too is fun n games. I have tried so many of the new types...they have a tendency to wilt on flowering. Overcame this, with logic, research and diligence but primarily by allowing root system instead of flowers to develop. Harvest Moon, Arts Pride, etc., etc., have been delightful but for 2 years only.
the other thing I tried was to protect them over winter but pathogens/whatever developed when they got too warm.
The doubles seem to be hardier too