| Cultivar | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
| 'American Monster' | Giant | Blue/Green | - | - | Hybrid | Near-White | June into July | Wade, Van | --NR-- |
| 'Backyard Monster' | Large | Med-Green | Marginal | White | Unknown | Near-White | June | Schwarz, Jim | .2007 |
| 'Cookie Monster' | Large | Yellow | - | - | Hybrid | - | - | Kuk, Bob | --NR-- |
| 'Giantland Blue Monster' | Giant | Blue/Green | - | - | Unknown | - | - | Miller, Jeff | --NR-- |
| 'Green-eyed Monster' | Giant | Dark-Green | - | - | Unknown | Near-White | June into July | Simpers, Lucille | --NR-- |
| 'Hollywood Loch Ness Monster' | Medium | Blue/Green | | | Unknown | | | Krueger, Michael & Krueger, Fran | --NR-- |
| 'Lochness Monster' | Large | Yellow | - | - | Sport | Near-White | June | Brill, Kirk | --NR-- |
| 'Mommy's Little Monster' | Medium | Blue/Green | - | - | Hybrid | - | - | Stadden, Josh | --NR-- |
| 'Monster Babe' | Giant | Blue/Green | - | - | Hybrid | Pale-Lavender | - | Minks, Eldren & Malloy, Alex | .2000 |
| 'Monster Ears' | Medium | Med-Green | - | - | Sport | Near-White | July into August | Heemskerk, Gerardus | .2014 |
| 'Moon Monster' | Large | Blue/Green | - | - | Unknown | - | June into July | Lachman, Wm & Lachman, Eleanor & Walek, Kevin | .2009 |
| 'Sea Blue Monster' | Large | Blue/Green | - | - | Hybrid | Near-White | June into July | Seaver, Mildred | .2009 |
| 'Sea Monster' | Large | Med-Green | - | - | Hybrid | Near-White | June into July | Seaver, Mildred & Walek, Kevin | .2009 |
| 'Simpers Green Eyed Monster' | - | - | - | - | Duplicate | - | - | Duplicate Name | --NR-- |
| 'Soules' Monster' | Giant | Blue/Green | - | - | Unknown | - | - | Soules, Marjorie | --NR-- |
| 'Swamp Monster' | Large | Dark-Green | - | - | Hybrid | Near-White | June | Lachman, Wm & Lachman, Eleanor | .1991 |
| 'Wood Monster' | Giant | Med-Green | - | - | Unknown | - | July into August | Woods, Doyle & Schulz, Ed | .2011 |
|