Cultivar NamePlant SizeLeaf ColorVariegationVar ColorOriginSeasonSourceRegistered
'Umezawa Nishiki'SmallMed-GreenStreakedSpecklesNat-SportAugust to SeptemberUmezawa, Senkichi--NR--
'Uncle Hirsch'-Blue/GreenMarginalYellowHybridAugust to SeptemberGraves, Butch.2008
'Undertow'SmallMed-Green--HybridAugust to SeptemberSeaver, Charles.2012
'Uniquely Catawampus'SmallMed-GreenMarginalWhiteHybridAugust to SeptemberRosenberg, Marlene & Miller, Jeff.2016
'Unruly Child'MediumDark-Green--UnknownJuly into SeptemberAvent, Tony.2012
'Urajiro Amagi Iwa'MediumDark-Green--UnknownSeptemberUnknown & Walek, Kevin.2009
'Urajiro Hachijo'MediumMed-Green--Nat-SportSeptemberUnknown--NR--
'Urajiro Iwa'MediumMed-Green--UnknownSeptemberUnknown--NR--
'Urajiro Izu Iwa'SmallDark-Green--UnknownAugust to SeptemberUnknown & Walek, Kevin.2009
'Urajiro Musashino'SmallMed-Green--Nat-SportAugust to SeptemberUnknown--NR--
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