| Cultivar Name | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
| 'Eagle Bay' | Medium | Med-Green | Marginal | Yellow | Unknown | - | - | Lydell, Ransom | --NR-- |
| 'Eel River' | Giant | Med-Green | - | - | Unknown | - | - | Wade, Van | --NR-- |
| 'Elata Fountain' | - | - | - | - | Unknown | - | - | Sataka, Toshihiko | --NR-- |
| 'Elbe' | Medium | Blue/Green | - | - | Unknown | Near-White | July | Klose, Heinz | --NR-- |
| 'Elkhart Lake' | Large | Blue/Green | - | - | Hybrid | - | - | Visser, Cees | --NR-- |
| 'Emerald Waters' | Small | Med-Green | - | - | TC Sport | Pale-Lavender | July into August | Micheletti, Tom | .2011 |
| 'Emerald Waves' | Small | Blue/Green | - | - | Hybrid | Light-Purple | July | Zumbar, Wm | --NR-- |
| 'Ems Pfeil' | Miniature | Blue/Green | - | - | Hybrid | - | June into July | Linnenschmidt, Martin | .2016 |
| 'Enchanted Mist' | Small | Med-Green | Marginal | White | Unknown | - | June into July | Hackbarth, Robert | .2015 |
| 'Erie' | Medium | Blue/Green | - | - | Unknown | - | - | Unknown | --NR-- |
| 'Erie Canal' | Small | Med-Green | - | - | Unknown | - | - | Malloy, Alex | --NR-- |
| 'Erie Magic' | Medium | Blue/Green | Marginal | Yellow | Sport | Pale-Lavender | July | Zilis, Mark | .1999 |
| 'Everglades' | Medium | Blue/Green | Marginal | Yellow | Sport | Near-White | June into July | Savory, Robert | .1988 |
|