| Cultivar | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
| 'Bellville Giant' | Giant | Blue/Green | | - | Unknown | - | June into July | Wade, Van & Ward, Dr Dick & Jane | .2015 |
| BLUE GIANT | - | - | | - | TRADEMARK | - | - | TRADENAME | --NR-- |
| 'Blue Giant' | - | - | | - | Duplicate | - | - | Duplicate Name | --NR-- |
| 'Devon Giant' | Giant | Blue/Green | | - | Unknown | Near-White | July into August | Bowden, Roger | --NR-- |
| 'Frost Giant' | Giant | Blue/Green | Marginal | Yellow | Unknown | Pale-Lavender | June into July | Lefever, Wyatt & Solberg, Robert | .2008 |
| 'Gentle Giant' | Large | Blue/Green | | - | Hybrid | Pale-Lavender | June | Black, Paul | .2005 |
| 'Giant Beaupré' | - | - | | - | Duplicate | - | - | Duplicate Name | --NR-- |
| 'Giant Green' | - | - | | | Duplicate | - | - | Duplicate Name | --NR- |
| 'Giant Piecrust' | Large | Med-Green | | - | Unknown | - | - | Tompkins, Cynthia | --NR-- |
| 'Giant Streaker' | Large | Blue/Green | Streaked | Yellow | TC Sport | Pale-Lavender | June into July | Elslager, Ed | .2004 |
| 'Giantland Aftershock' | Giant | Blue/Green | | - | Unknown | - | - | Miller, Jeff | --NR-- |
| 'Giantland Athletic Cup' | Large | Dark-Green | | - | Unknown | Near-White | June into July | Miller, Jeff | --NR-- |
| 'Giantland Banana Tree' | Giant | Blue/Green | | - | Unknown | - | - | Miller, Jeff | --NR-- |
| 'Giantland Believe in a Dream' | Giant | Yellow | | - | Unknown | - | - | Miller, Jeff | --NR-- |
| 'Giantland Big Bastard' | Giant | Blue/Green | | - | Unknown | - | - | Miller, Jeff | --NR-- |
| 'Giantland Blue Banana' | Large | Blue/Green | Marginal | Yellow | Unknown | - | - | Miller, Jeff | --NR-- |
| 'Giantland Blue Cheese' | Medium | Blue/Green | Streaked | White | Hybrid | - | - | Miller, Jeff | --NR-- |
| 'Giantland Blue Monday' | Giant | Blue/Green | | - | Unknown | - | - | Miller, Jeff | --NR-- |
| 'Giantland Blue Monster' | Giant | Blue/Green | | - | Unknown | - | - | Miller, Jeff | --NR-- |
| 'Giantland Butterfly Wings' | Giant | Blue/Green | Marginal | White | Unknown | - | - | Miller, Jeff | --NR-- |
| 'Giantland Cup of Java' | Medium | Med-Green | Streaked | White | Nat-Sport | Pale-Lavender | July into August | Miller, Jeff | --NR-- |
| 'Giantland Curly Toes' | Small | Yellow-Gold | | - | Hybrid | - | - | Miller, Jeff | --NR-- |
| 'Giantland Dawn’s Glow' | Giant | Yellow | | - | Unknown | - | - | Miller, Jeff | --NR-- |
| 'Giantland Elegance' | Large | Yellow | | - | Unknown | - | - | Miller, Jeff | --NR-- |
| 'Giantland Fiesta' | Medium | Med-Green | Marginal | Yellow | Unknown | | | Miller, Jeff | --NR-- |
| 'Giantland First Scoop' | Large | Dark-Green | | - | Unknown | - | - | Miller, Jeff | --NR-- |
| 'Giantland Friends' | Large | Light-Green | | - | Unknown | - | - | Miller, Jeff | --NR-- |
| 'Giantland Friends Forever' | Giant | Med-Green | | | Unknown | | | Miller, Jeff | --NR-- |
| 'Giantland Garden Goddess' | Large | Blue/Green | Medial | Yellow | Unknown | - | - | Miller, Jeff | --NR-- |
| 'Giantland Gator Crater' | Large | Dark-Green | | - | Unknown | - | - | Miller, Jeff | --NR-- |
| 'Giantland Gatorback' | Giant | Med-Green | Streaked | Yellow | Unknown | Near-White | June into July | Miller, Jeff | --NR-- |
| 'Giantland Go Pack Go' | Medium | Med-Green | Marginal | Yellow | Unknown | | | Miller, Jeff | --NR-- |
| 'Giantland Golden Dome' | Giant | Light-Green | | - | Unknown | - | - | Miller, Jeff | --NR-- |
| 'Giantland Golden Goddess' | Giant | Yellow | | - | Hybrid | - | - | Miller, Jeff | --NR-- |
| 'Giantland Gratitude' | Medium | Blue/Green | Marginal | White | Unknown | | | Miller, Jeff | --NR-- |
| 'Giantland Green Tuesday' | Large | Med-Green | | - | Unknown | - | - | Miller, Jeff | --NR-- |
| 'Giantland Halloween' | Giant | Blue/Green | | - | Unknown | - | - | Miller, Jeff | --NR-- |
| 'Giantland Hearts on Fire' | Medium | Blue/Green | Medial | Yellow | Hybrid | - | - | Miller, Jeff | --NR-- |
| 'Giantland Honor Thy Father' | Giant | Med-Green | Marginal | Yellow | Unknown | | | Miller, Jeff | --NR-- |
| 'Giantland Humpback' | - | - | | - | Unknown | - | - | Miller, Jeff | --NR-- |
| 'Giantland Ice Princess' | Large | Blue/Green | Marginal | Yellow | Unknown | - | - | Miller, Jeff | --NR-- |
| 'Giantland Indi Bowl' | Giant | Blue/Green | | - | Unknown | - | - | Miller, Jeff | --NR-- |
| 'Giantland Irish Cream' | Giant | Med-Green | Marginal | White | Nat-Sport | | | Miller, Jeff | --NR-- |
| 'Giantland Irish Frost' | - | - | | - | Unknown | - | - | Miller, Jeff | --NR-- |
| 'Giantland Irish Mist' | Giant | Blue/Green | | - | Unknown | - | - | Miller, Jeff | --NR-- |
| 'Giantland Iron Mouse' | Small | Blue/Green | | - | Nat-Sport | Light-Purple | July | Miller, Jeff | --NR-- |
| 'Giantland Karma' | Giant | Blue/Green | Marginal | White | Unknown | - | - | Miller, Jeff | --NR-- |
| 'Giantland King Triton' | Large | Blue/Green | | | Unknown | | | Miller, Jeff | --NR-- |
| 'Giantland Love Under the Stars' | Medium | Blue/Green | | - | Nat-Sport | - | - | Miller, Jeff | --NR-- |
| 'Giantland Megalodon' | Giant | Med-Green | | - | Unknown | - | - | Miller, Jeff | --NR-- |
| 'Giantland Morning Sunshine' | - | - | | - | Unknown | - | - | Miller, Jeff | --NR-- |
| 'Giantland Mother's Day' | Large | Light-Green | Marginal | Yellow | Unknown | - | - | Miller, Jeff | --NR-- |
| 'Giantland Mother's Love' | Medium | Yellow | Marginal | White | Unknown | - | - | Miller, Jeff | --NR-- |
| 'Giantland Mouse Cheese' | Miniature | Light-Green | | - | Hybrid | Pale-Lavender | July into August | Miller, Terry & Meyer, Terry | .2011 |
| 'Giantland My Sister Liz' | - | - | | - | Unknown | - | - | Miller, Jeff | --NR-- |
| 'Giantland Mystic' | Medium | Blue/Green | | - | Unknown | - | - | Miller, Jeff | --NR-- |
| 'Giantland Now You See It' | Medium | Med-Green | Medial | White | Nat-Sport | Light-Purple | July | Miller, Jeff | --NR-- |
| 'Giantland Ocean Fog' | Large | Blue/Green | Streaked | Speckles | Nat-Sport | Pale-Lavender | July | Miller, Jeff | --NR-- |
| 'Giantland Pac-Man' | Giant | Yellow | | - | Hybrid | - | - | Miller, Jeff | --NR-- |
| 'Giantland Pay it Forward' | Large | Blue/Green | | - | Unknown | - | - | Miller, Jeff | --NR-- |
| 'Giantland Peeps' | Small | Yellow | | - | Unknown | - | - | Miller, Jeff | --NR-- |
| 'Giantland Puckered Crevice' | Large | Yellow | | - | Unknown | - | - | Miller, Jeff | --NR-- |
| 'Giantland Royal Highness' | Large | Med-Green | Streaked | Yellow | Unknown | | | Miller, Jeff | --NR-- |
| 'Giantland Serenity' | Large | Blue/Green | Marginal | Yellow | Unknown | - | - | Miller, Jeff | --NR-- |
| 'Giantland Skylight Bowl' | Medium | Blue/Green | | - | Unknown | - | - | Miller, Jeff | --NR-- |
| 'Giantland Smitten' | Large | Blue/Green | Streaked | Yellow | Unknown | - | - | Miller, Jeff | --NR-- |
| 'Giantland Sunny Mouse Ears' | Miniature | Yellow | | - | Hybrid | Light-Purple | July | Miller, Jeff, Meyer, Terry & Zilis, Mark | .2011 |
| 'Giantland Symmetry' | Medium | Light-Green | | - | Unknown | - | - | Miller, Jeff | --NR-- |
| 'Giantland Tantalize' | Giant | Dark-Green | Medial | Light Green | Nat-Sport | Near-White | June into July | Miller, Jeff | --NR-- |
| 'Giantland Thor' | Giant | Blue/Green | | - | Unknown | - | - | Miller, Jeff | --NR-- |
| 'Giantland Tsunami' | Giant | Blue/Green | | - | Unknown | - | - | Miller, Jeff | --NR-- |
| 'Giantland Twizzler' | Small | Blue/Green | | | Unknown | | | Miller, Jeff | --NR-- |
| 'Giantland Warlock' | Large | Blue/Green | | | Hybrid | | | Miller, Jeff | --NR-- |
| 'Giantland What the Hill Phil' | Large | Blue/Green | | - | Unknown | - | - | Miller, Jeff | --NR-- |
| 'Giantland Whiskey River' | Large | Blue/Green | Marginal | White | Unknown | - | - | Miller, Jeff | --NR-- |
| 'Giantland Wild Thing' | Medium | Med-Green | Streaked | Yellow | Unknown | Med-Lavender | July into August | Miller, Jeff | --NR-- |
| 'Giantland Wrinkled Shovel' | Giant | Blue/Green | | - | Unknown | - | - | Miller, Jeff | --NR-- |
| 'Giantland Yellow Dome' | Giant | Yellow | | - | Hybrid | - | - | Miller, Jeff | --NR-- |
| 'Jolly Green Giant' | Giant | Med-Green | | - | Hybrid | Pale-Lavender | June into July | Armstrong, Maxine & AHS | .1986 |
| 'Lakeside Gentle Giant' | Large | Med-Green | Marginal | White | Unknown | - | - | Chastain, Mary | --NR-- |
| 'Lilac Giant' | Giant | Blue/Green | | - | Hybrid | Pale-Lavender | June into July | Hensen, Karel & Verboom | .1983 |
| 'Lothar the Giant' | Large | Med-Green | | - | Unknown | - | - | Balitewicz, Bob | --NR-- |
| 'Nesmith Giant' | Giant | Dark-Green | | - | Hybrid | Near-White | June | Nesmith, Elizabeth & Ruh, Peter | .1994 |
| 'Osiris Giant Green' | Giant | Med-Green | | - | Unknown | - | - | Fafard, Serge | --NR-- |
| 'Puckered Giant' | Large | Blue/Green | | - | Hybrid | Near-White | June into July | Powell, Loleta | .1983 |
| 'Robust Giant' | Large | Light-Green | | - | Unknown | - | June into July | Ruh, Peter & Jean | .2005 |
| 'Silver Giant' | Giant | Blue/Green | | - | Hybrid | Near-White | June into July | Owens, Clarence | .1987 |
| 'The Giant of Holland' | - | - | | - | Duplicate | - | - | Duplicate Name | --NR-- |
| 'Valley's Ice Giant' | Giant | Blue/Green | | - | Hybrid | Pale-Lavender | July into August | Linneman, Jeroen | .2015 |
| 'Viette's Giant' | - | - | | - | Unknown | - | - | Viette, Andre | --NR-- |
| 'Zager Giant Puckered' | Giant | Light-Green | | - | Unknown | Near-White | June into July | Zager, Herbert A. & Ruh, Peter | .1989 |
| 'Zager's Giant' | - | - | | - | Duplicate | - | - | Duplicate Name | --NR-- |
| 'Zager's Giant Sieboldiana' | - | - | | - | Duplicate | - | - | Duplicate Name | --NR-- |
| 'Zager's Green Giant' | Giant | Dark-Green | | - | Unknown | - | - | Zager, Herbert | --NR-- |
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