Cultivar NamePlant SizeLeaf ColorVariegationVar ColorOriginFlower ColorSeasonSourceRegistered
'Jet Black'LargeBlue/Green--HybridNear-WhiteJulyBeilstein, Doug & Mardy--NR--
'John Henry's Shadow'LargeBlue/Green--HybridPale-LavenderJuly into AugustLivingston, Ron--NR--
'John Tyler'LargeBlue/Green--UnknownLight-PurpleJulyRuh, Peter & Zilis, Mark.2011
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