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No.Cultivar NamePlant SizeLeaf ColorVariegationVar ColorOriginFlower ColorSeasonSourceRegistered
1 'Daddy Boomer'GiantBlue/GreenMarginalYellowSportNear-WhiteJuly into AugustElslager, Ed.2005
2 'Dakota'GiantBlue/Green--Unknown--Wade, Van--NR--
3 'Dandy Randy'LargeDark-Green--TC SportPale-LavenderJulyAsch, Stuart.2004
4 'Dark Secret'GiantBlue/Green--HybridNear-WhiteJune into JulyWard, Dr Dick & Ward, Jane.2009
5 'Dark Treasure'GiantDark-Green--Unknown--Lysne, Rod.2021
6 'Darkside' (Ward)LargeBlue/Green--UnknownNear-WhiteJune into JulyWard, Dr Dick & Ward, Jane--NR--
7 'Dauntless'MediumBlue/Green--HybridNear-WhiteJune into JulyRuh, Peter.2002
8 'Dax'MediumDark-GreenMedialGreenSportPale-LavenderJuly into AugustDupre, Dirk.2006
9 'Deep Blue Sea'LargeBlue/Green--HybridPale-LavenderJulySeaver, Charles.1994
10 'Delaware'LargeDark-Green--UnknownNear-WhiteJuneWade, Van--NR--
11 'Density'LargeBlue/Green--UnknownNear-WhiteJulyMinks, Eldren.1990
12 'Devon Blue'MediumBlue/Green--UnknownPale-LavenderJuly into AugustSmith, Eric & Bowden, Roger & Bowden, Ann.1988
13 'Devon Green'MediumDark-Green--SportPale-LavenderJulyBowden, Roger & Ruh, Peter.2005
14 'Diamond Jubilee'LargeBlue/Green--HybridPale-LavenderJulySavory, Dennis.2006
15 'Diamond Lake'MediumBlue/Green--UnknownPale-LavenderJune into JulyWalters Gardens--NR--
16 'Dick's Green Carpet'LargeDark-Green--SportPale-LavenderJulyWade, Van--NR--
17 'Dippity Dew'LargeBlue/GreenMarginalYellowTC SportNear-WhiteJulySchwarz, Jim.1999
18 'Diva'LargeYellow--HybridNear-WhiteJulyO'Harra, Russ & Russ O'Harra Hosta Society.1999
19 'Dixie Joy'SmallMed-GreenStreakedSpecklesHybridPale-LavenderAugustAden, Paul.1983
20 'Doctor Bill-Bob'LargeBlue/Green--UnknownNear-White-Seaver, Mildred & Walek, Kevin.2009
21 'Doctor Reath'LargeBlue/GreenStreakedYellowSportNear-WhiteJune into JulyReath, David & Ruh, Peter.1997
22 'Don's Pie Extreme'LargeMed-Green--Hybrid--Unknown--NR--
23 'Dorothy Rules'LargeBlue/GreenStreakedYellowUnknown-June into JulyElslager, Ed--NR--
24 'Dorset Blue'SmallBlue/Green--UnknownPale-LavenderAugustSmith, Eric & Aden, Paul.1977
25 'Dorset Blueblood'SmallBlue/Green--SportPale-LavenderJulyZilis, Mark--NR--
26 'Dorset Charm'MediumBlue/Green--HybridPale-LavenderAugustSmith, Eric & Ruh, Peter.1990
27 'Dorset Flair'MediumBlue/Green--HybridLight-PurpleAugust to OctoberSmith, Eric & Ruh, Peter.1990
28 'Dragon Lady'GiantBlue/Green--Unknown-JulySeaver, Mildred--NR--
29 'Dragon's Eye'MediumMed-Green--HybridPale-LavenderAugustLefever, Wyatt & Solberg, Robert.2008
30 'Dream in Blue'MediumBlue/Green--HybridPale-Lavender-Anderson, Marlys--NR--
31 'Dream Maker'LargeBlue/GreenStreakedYellowSportNear-WhiteJune into JulyStrandberg, Mark--NR--
32 'Dressed in Green'MediumMed-Green--UnknownMed-LavenderAugust to SeptemberVan Eechaute, Danny.2004
33 'Du Page Delight'LargeBlue/GreenMedialYellowSportPure-WhiteJuneZilis, Mark.1990
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