Buttercup and Butterfly are listed separately.
 
CultivarPlant SizeLeaf ColorVariegationVar ColorOriginFlower ColorSeasonSourceRegistered
'Butter and Eggs'MediumYellowStreakedWhiteHybrid--Kerr, Jeff.2000
'Butter Cream'MediumYellow--Hybrid--Balitewicz, Bob--NR--
'Butter Rim'SmallBlue/GreenMarginalYellowHybridPure-WhiteJuly into AugustSummers, Alex.1986
'Butter White Rim'MediumMed-GreenMarginalWhiteNat-SportPure-WhiteJuly into AugustSummers, Alex--NR--
'Butter Yellow'LargeYellow--UnknownPale-LavenderJune into JulyVaughn, Kevin.1982
'Butterball'SmallLight-Green--Unknown--Goodwin, Randy--NR--
'Buttercrunch'MediumYellow--Unknown--Dean, Don--NR--
'Butternut Hill'LargeMed-Green--HybridPale-LavenderJuly into AugustEnglerth, Lawrence & Ruh, Peter & Jean.2001
'Drawn Butter'MediumMed-Green--HybridPale-LavenderJuly into AugustKrul, Nancy & Belle Gardens.1994
'Greenhead Butterscotch Delight'MiniatureMed-GreenMarginalYellowUnknownPale-LavenderAugust to SeptemberFinke, Chuck.2013
'Kiwi Buttercrunch'SmallYellow--Unknown--Sligh, Barry--NR--
'Lakeside Butter Ball'MediumYellow--UnknownPure-WhiteJune into JulyChastain, Mary.2002
'OHS Butter Pat'Medium---Hybrid--Ontario Hosta Society--NR--
'Rosedale Butter Rum'MediumBlue/GreenStreakedYellowHybridLight-PurpleJulyHadrava, Jerry.1999

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