No.CultivarPlant SizeLeaf ColorVariegationVar ColorOriginFlower ColorSeasonSourceRegistered
1 'American Thunderbolt'LargeMed-GreenMedialYellowUnknown--Wade, Van--NR--
2 'Black Thunder'LargeDark-GreenMedialWhiteSportPale-LavenderJuly into AugustSchwarz, Jim & Schwarz, Karen & Zilis, Mark.2014
3 'Blue Thunder'MediumBlue/Green--HybridPale-LavenderJuly into AugustZilis, Mark--NR--
4 'Chief Thundercloud'GiantBlue/Green--Hybrid--Wade, Van--NR--
5 'Giantland Thunderstorm'MediumLight-GreenStreakedWhiteUnknown  Miller, Jeff--NR--
6 'Green Thunder'----Unknown--Unknown--NR--
7 'Red Thunder'MediumMed-Green--Hybrid--Beilstein, Doug & Malloy, Alex--NR--
8 'Rolling Thunder'LargeBlue/Green--UnknownNear-WhiteJune into JulyBrashear, Carol--NR--
9 'Rosedale Thunderheads'MediumDark-GreenMarginalYellowHybridLight-PurpleJulyHadrava, Jerry.2000
10 'Sea Thunder'LargeDark-GreenMedialWhiteSportLight-PurpleJuly into AugustSeaver, Mildred & Walek, Kevin.2009
11 'Thunder Boomer'MediumBlue/Green--HybridPale-LavenderJulySolberg, Robert.2007
12 'Thunder Clouds'LargeBlue/Green--UnknownNear-White-Lydell, Ransom--NR--
13 'Thunderbolt'LargeBlue/GreenMedialWhiteSportNear-WhiteJune into JulyCrowder, Allen.2002
14 'Thunderstorm'LargeBlue/GreenStreakedYellowUnknown--Unknown--NR--
15 'Tropic Thunder'MediumMed-GreenMarginalYellowHybrid--Ward, Dr Dick & Ward, Jane.2012
16 'Tropical Thunder'LargeMed-GreenStreakedYellowSportMed-LavenderJuly into AugustAhrens, Thomas--NR--
17 'Wheaton Thunder'LargeBlue/GreenMarginalWhiteSportPale-LavenderJuly into AugustGoodenough, Rick--NR--
18 'Zimmerman Thunder'SmallDark-Green--TC SportPale-LavenderJulyCompton, Steve & Zilis, Mark.2008
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