| Cultivar Name | Plant Size | Leaf Color | Variegation | Var Color | Origin | Season | Source | Registered |
| 'Ain't Misbehavin' | Medium | Med-Green | - | - | Hybrid | August to October | Dalton, Jim & Meg | .2012 |
| 'Tardiflora' | Small | Med-Green | - | - | Hybrid | September to October | Unknown | --NR-- |
| 'Tardiflora Gold Streak' | Medium | Yellow | Streaked | - | Nat-Sport | September to October | Unknown | --NR-- |
| 'Tardiflora Honey Glaze' | Small | Yellow | - | - | Nat-Sport | August to October | Unknown | --NR-- |
| 'Tardiflora Hybrida' | Large | Med-Green | - | - | Hybrid | August to October | Arends, George & Ruh, Peter | .1992 |
| 'Tardiflora Kinakafu' | Medium | Med-Green | Medial | Yellow | Nat-Sport | August to October | Unknown | --NR-- |
| 'Teeny-weeny Bikini' | Miniature | Med-Green | Medial | Creamy White | Hybrid | August to October | Elslager, Ed | .2000 |
| 'Tiddlywinks' | Miniature | Blue/Green | Marginal | White | Unknown | August to October | Banyai, Pauline | .1989 |
| 'Tiffney's Darth Vader' | Large | Dark-Green | - | - | Nat-Sport | August to October | Dreessen, Jack | .1999 |
| 'Tinker Bell' | Small | Med-Green | - | - | Hybrid | August to October | Williams, Frances & Williams, Connie | .1986 |
| 'Tokyo Smog' | Medium | Med-Green | - | - | Hybrid | August to October | Van Eechaute, Danny | --NR-- |
| 'Totally Twisted' | Small | Light-Green | - | - | Hybrid | August to October | Scheer, Alttara | --NR-- |
| 'Tour de Pise' | Medium | Blue/Green | - | - | Unknown | September to October | Bastille, Jocelyne | --NR-- |
| 'Treasure Island' | Small | Dark-Green | - | - | Hybrid | August to October | Avent, Tony | .1998 |
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