I have been growing Knockout for about six years. I have many divisions made from my original plant. They grow very quickly, have tons ...Read Moreof blooms and they don't wilt in the sun like some hostas during a dry spell. They also produce tons of seeds. They are not bothered by slugs even when young. I have mine growing in deep shade and moderate sun and they do well in both environments.
I have been growing Knockout for about six years. I have many divisions made from my original plant. They grow very quickly, have tons ...Read More
Zilis claims this cultivar is afflicted with marginal tearing, perhaps even worse than 'Brim Cup'.
Flower scapes 12". Aden 1986.