- HostaHelper from PlantsGalore.Com

Cultivar Name	Plant Size	Origin	Flower Color	Season	Source	Registered
'Zager Blue'	Large	Unknown	Pale-Lavender	July	Zager, Herbert A. & Ruh, Peter	.1987
'Zager's Tokudama'	Large	Hybrid	Near-White	June into July	Zager, Herbert A. & Ruh, Peter & Ruh, Jean	.2003
'Zeppelin'	Large	Hybrid	-	July into August	Zilis, Mark	.2009
'Zero Tolerance'	Medium	Hybrid	-	-	Lydell, Ransom	--NR--
'Zita'	Medium	Unknown	Med-Lavender	-	Kósa, Lehel	--NR--
'Zucchini Fries'	Small	Hybrid	-	-	Goodenough, Rick	--NR--