| Cultivar | Same As | Origin | Plant Size | Leaf Color | Variegation | Var Color | Flower Color | Season | Source |
| 'Abba Dabba Do' | 'Zebra Stripes' | Hybrid | Small | Med-Green | - | - | Pale-Lavender | June into July | Avent, Tony |
| 'Abiqua Drinking Gourd' | 'Blue Genes' | Hybrid | Small | Blue/Green | - | - | Pale-Lavender | July into August | Avent, Tony |
| 'Abiqua Drinking Gourd' | 'Blueberry Waffles' | Hybrid | Giant | Med-Green | - | - | Pale-Lavender | June into July | Brown, Sandy |
| 'Abiqua Drinking Gourd' | 'Dixie Cups' | Hybrid | Medium | Blue/Green | - | - | Pale-Lavender | July into August | Avent, Tony |
| 'Abiqua Drinking Gourd' | 'Elementary Genetics' | Hybrid | Medium | - | - | - | - | - | Jolliffe, Thomas |
| 'Abiqua Drinking Gourd' | 'Giantland Mouse Cheese' | Hybrid | Miniature | Light-Green | - | - | Pale-Lavender | July into August | Miller, Terry & Meyer, Terry |
| 'Abiqua Drinking Gourd' | 'Old Smoky' | Hybrid | Large | Med-Green | - | - | Near-White | June into July | McDonell, Harold |
| 'Abiqua Drinking Gourd' | 'Rimmed Cauldron' | Hybrid | Medium | Blue/Green | Marginal | Yellow | Pale-Lavender | June into July | Dye, Kay |
| 'Abiqua Drinking Gourd' | 'Steely Dan' | Hybrid | Small | Blue/Green | - | - | Pale-Lavender | June into July | Avent, Tony |
| 'Abiqua Drinking Gourd' | 'Triple Double' | Hybrid | Medium | Blue/Green | - | - | - | - | Jolliffe, Thomas |
| 'Abiqua Recluse' | 'The Horseshoe' | Hybrid | Large | Blue/Green | - | - | Pale-Lavender | June into July | Beilstein, Doug & Beilstein, Mardy |
| 'Aden No. 219' | 'Sun Power' | Hybrid | Large | Yellow | - | - | Pale-Lavender | July | Aden, Paul |
| 'Aden No. 275' | 'High Fat Cream' | Hybrid | Large | Light-Green | Streaked | Speckles | Pale-Lavender | July into August | Shaw, Florence & Aden, Paul |
| 'Aden No. 275' | 'Resonance' | Hybrid | Small | Dark-Green | Marginal | Creamy White | Light-Purple | August | Aden, Paul |
| 'Aden No. 275' | 'Yellow Splash' | Hybrid | Medium | Dark-Green | Streaked | Creamy White | Deep-Purple | July into August | Aden, Paul |
| 'Aden No. 324' | 'Fall Bouquet' | Hybrid | Small | Dark-Green | - | - | Light-Purple | August to October | Aden, Paul |
| 'Aden No. 341' | 'Two Step' | Hybrid | Medium | Med-Green | Marginal | Yellow | Pure-White | August | Aden, Paul |
| 'Aden No. 353' | 'Blue Vision' | Hybrid | Large | Blue/Green | - | - | Near-White | June into July | Aden, Paul |
| 'Aden No. 355' | 'Blue Heaven' | Hybrid | Medium | Blue/Green | - | - | Pale-Lavender | June into July | Smith, Eric & Aden, Paul |
| 'Aden No. 355' | 'Peek-A-Boo' | Hybrid | Large | Blue/Green | - | - | Near-White | June into July | Aden, Paul |
| 'Aden No. 361' | 'Blue Angel' | Hybrid | Giant | Blue/Green | - | - | Pure-White | - | Shaw, Florence |
| 'Aden No. 382' | 'Bright Glow' | Hybrid | Small | Yellow | - | - | Pure-White | June into July | Aden, Paul |
| 'Aden No. 388' | 'Golden Ruffles' | Hybrid | - | Yellow | - | - | - | - | Aden, Paul |
| 'Aden No. 618' | 'White Charger' | Hybrid | Large | Dark-Green | - | - | - | July into September | Aden, Paul |
| 'Aden No. 802' | 'Invincible' | Hybrid | Medium | Med-Green | - | - | Pale-Lavender | August | Aden, Paul |
| 'Akebono' | 'Party Favor' | Hybrid | Medium | Med-Green | - | - | Med-Lavender | June into July | Solberg, Robert |
| 'Alba' | 'Weihenstephan' | Hybrid | Small | Med-Green | - | - | Pure-White | August | Mussel, Hermann & Klose, Heinz & Ruh, Peter |
| 'American King of the Woods' | 'American Yeti' | Hybrid | Giant | Blue/Green | - | - | Near-White | July | Wade, Van |
| 'American Sweetheart' | 'Age of Gold' | Hybrid | Large | Yellow-Gold | - | - | Near-White | July into August | Hansen, Hans & Walters Gardens |
| 'Amy Aden' | 'Sitting Pretty' | Hybrid | Small | Dark-Green | Medial | Yellow | Light-Purple | July | Aden, Paul |
| 'Ani Machi' | 'Gosan Gold Mist' | Hybrid | Medium | Yellow | Marginal | Green | Light-Purple | July into August | Schmid, W. George |
| 'Anne Arett' | 'Gold Ribbon' | Hybrid | Small | Yellow | - | - | Pale-Lavender | August | Nyikos, Frank |
| 'Arc de Triomphe' | 'Valley's Love Cats' | Hybrid | Giant | Blue/Green | Streaked | Yellow | Near-White | June into July | Linneman, Jeroen |
| 'Arch Duke' | 'Holar Dragon Rider' | Hybrid | Large | Blue/Green | - | - | - | - | Van Keer, Ronny |
| 'Arch Duke' | 'Holar Flying Saucer' | Hybrid | Large | Blue/Green | - | - | - | - | Van Keer, Ronny |
| 'Arch Duke' | 'Holar Rainbow Colors' | Hybrid | Giant | Med-Green | Streaked | White | - | - | Van Keer, Ronny |
| 'Aspen Gold' | 'Blood, Sweat and Tears' | Hybrid | Small | Yellow | - | - | Pale-Lavender | July | Dean, Don |
| 'Aspen Gold' | 'Fort Knox' | Hybrid | Large | Yellow | - | - | Pale-Lavender | - | Wilkins, Dr Jim & Wilkins, Jill |
| 'Aspen Gold' | 'Green Aspen' | Hybrid | Large | Blue/Green | - | - | Near-White | July | Owens, Clarence |
| 'Aspen Gold' | 'Michigan Gold' | Hybrid | Medium | Yellow | - | - | Pale-Lavender | July | Benedict, Dr Ralph (Herb) |
| 'Aspen Gold' | 'Turbulent Seas' | Hybrid | Giant | Dark-Green | - | - | Light-Purple | July into August | Dean, Don |
| 'Aspen Gold' seedling | 'Limelight' | Hybrid | Small | Light-Green | Marginal | White | Pale-Lavender | July into August | Savory, Robert |
| 'Astral Bliss' | 'Billie Holiday' | Hybrid | Medium | Med-Green | - | - | Pale-Lavender | August | Husemann, Jim |
| 'Astral Bliss' | 'Country River Rapids' | Hybrid | Medium | Blue/Green | Marginal | Yellow | Pale-Lavender | August to September | Dean, Don |
| 'Astral Bliss' | 'Leather and Lace' | Hybrid | Medium | Blue/Green | Marginal | Yellow | Pale-Lavender | August | Dean, Don |
| 'Astral Bliss' | 'River Dance' | Hybrid | Medium | Blue/Green | | - | Pale-Lavender | July | Dean, Don |
| 'Atom Smasher' | 'Alakazaam' | Hybrid | Small | Light-Green | Marginal | Yellow | Med-Lavender | July into August | Livingston, Ron |
| 'Atom Smasher' | 'The Razor's Edge' | Hybrid | Small | Med-Green | - | - | Pale-Lavender | August to September | Terpening, Kent & The American Hosta Society |
| 'August Moon' | 'Gold Drop' | Hybrid | Medium | Yellow | - | - | Pure-White | - | Anderson, Kenneth |
| 'August Moon' | 'Honey Moon' | Hybrid | Large | Light-Green | - | - | - | July | Anderson, Kenneth |
| 'August Moon' | 'Maui Buttercups' | Hybrid | Medium | Yellow | - | - | Near-White | July | Vaughn, William |
| 'August Moon' | 'Squash Casserole' | Hybrid | Large | Yellow | Marginal | Blue-Green | Light-Purple | July | Avent, Tony |
| 'Aureomaculata', H. ventricosa | 'Paintbrush' | Hybrid | Medium | Med-Green | - | - | Light-Purple | July | Minks, Eldren |
| 'Aureomarginata' H. montana | 'Lord Dullripple' | Hybrid | Medium | Med-Green | Marginal | White | Near-White | June into July | Kwick, Charles |
| 'Aureomarginata', H. montana | 'Christmas Cheer' | Hybrid | Large | Dark-Green | Marginal | White | Pale-Lavender | July | Beilstein, Doug & Beilstein, Mardy |
| 'Aureomarginata', H. montana | 'Cocky Junior' | Hybrid | Large | Med-Green | - | - | Pale-Lavender | July into August | Kwick, Charles |
| 'Aureomarginata', H. montana | 'David F. Mahoney' | Hybrid | Giant | Blue/Green | - | - | Near-White | June into July | Chamberlain, Steve |
| 'Aureomarginata', H. montana | 'King Tucker' | Hybrid | Giant | Dark-Green | - | - | - | August to September | Kwick, Charles |
| 'Aureomarginata', H. montana | 'Memories of Dorothy' | Hybrid | Large | Med-Green | Marginal | Creamy White | Pale-Lavender | July into August | Gowen, Hideko |
| 'Aureomarginata', H. montana | 'Miss Mitzi' | Hybrid | Medium | Dark-Green | Marginal | White | Med-Lavender | June into July | Schroeder, Bob & Schroeder, Barb & Beilstein, Doug |
| 'Aureomarginata', H. montana | 'Miss Tokyo' | Hybrid | Giant | Med-Green | Marginal | White | Pale-Lavender | June | Hansen, Hans |
| 'Aureomarginata', H. montana | 'Reid All About It' | Hybrid | Large | Dark-Green | Marginal | White | Pale-Lavender | July | Beilstein, Doug & Beilstein, Mardy |
| 'Aureomarginata', H. montana | 'Sir Cocky' | Hybrid | Giant | Dark-Green | - | - | - | June into July | Kwick, Charles |
| 'Aureomarginata', H. montana | 'Sir Lloyd T' | Hybrid | Large | Dark-Green | - | - | Near-White | June into July | Kwick, Charles |
| 'Aureomarginata', H. ventricosa | 'Stargazer' | Hybrid | Small | Med-Green | Marginal | White | Deep-Purple | June into July | Avent, Tony |
| 'Aureomarginata', H. ventricosa | 'Taffeta' | Hybrid | Medium | Dark-Green | - | - | Light-Purple | July | O'Harra, Russ |
| 'Aztec Treasure' sibling | 'Rising Sun' | Hybrid | Large | Yellow | - | - | Light-Purple | July into August | Vaughn, Kevin |
| 'Azure Snow' | 'Blue Tooth' | Hybrid | Medium | Blue/Green | - | - | Med-Lavender | August | Beilstein, Doug |
| 'Azure Snow' | 'Gay Paree' | Hybrid | Medium | Blue/Green | - | - | Light-Purple | - | Meyer, Bill |
| 'Azure Snow' | 'Hometown Hero' | Hybrid | Medium | Blue/Green | - | - | Pure-White | July into August | Stegeman, Bev & Stegeman, Dave |
| 'Azure Snow' | 'Ivanhoe' | Hybrid | Medium | Med-Green | Marginal | White | - | - | Beilstein, Doug & Malloy, Alex |
| 'Azure Snow' | 'Lily Blue Eyes' | Hybrid | Small | Blue/Green | - | - | Pale-Lavender | July into August | Donsky, George |
| 'Azure Snow' | 'Mandelbrot Set' | Hybrid | Giant | Light-Green | - | - | - | June | Nyikos, Frank |
| 'Azure Snow' | 'Valley's Blue Spike' | Hybrid | Medium | Blue/Green | - | - | - | - | Linneman, Jeroen |
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