| Medial (Center) Variegation | Plant Size | Leaf Color | Var Color | Origin | Season | Source | Registered |
| 'Don't Tease Me' | Medium | Dark-Green | White | Nat-Sport | July into August | White, Brian | --NR-- |
| 'T Dawg' | Large | Med-Green | White | TC Sport | July into August | Stark, Dean | --NR-- |
| 'T N T' | Medium | Dark-Green | Yellow | Sport | July into August | Zilis, Mark | .2010 |
| 'Taj Mahal' | Large | Med-Green | White | Hybrid | June into July | Ward, Dr Dick & Ward, Jane | .2009 |
| 'Tall Paul' | Large | Dark-Green | Yellow | Unknown | - | Livingston, Ron | --NR-- |
| 'Tangerine Tango' | Medium | Blue/Green | Yellow | TC Sport | July into August | Sebright Gardens | .2013 |
| 'Tango Twist' | Large | Med-Green | Yellow | Sport | June into July | Silvers, Bill | .2012 |
| 'Tapestry' | Large | Dark-Green | White | Unknown | June into July | Wasitis, Chick | .2021 |
| 'Tardiflora Kinakafu' | Medium | Med-Green | Yellow | Sport | August to October | Unknown | --NR-- |
| 'Teacher's Pride' | Medium | Blue/Green | White | Sport | July | Fransen, Marco & Fransen, Joyce & van Rossum, Jannes | --NR-- |
| 'Teddy Bear' (Falstad) | Small | Blue/Green | Green | Unknown | - | Falstad, C.H. | --NR-- |
| 'Teeny-weeny Bikini' | Miniature | Med-Green | Creamy White | Hybrid | August to October | Elslager, Ed | .2000 |
| 'Temple of Heaven' | Small | Med-Green | White | Hybrid | - | Ward, Dr Dick & Ward, Jane | .2012 |
| 'Temptation' | Giant | Blue/Green | White | Sport | June | Cornitensis, Roger | .2020 |
| 'Temptress' (Hicks) | Large | Med-Green | Yellow | Sport | July into August | Hicks, Gerry | .2017 |
| 'The Holy Trinity' | Small | Med-Green | Yellow | Unknown | - | Willetts, Jesse | --NR-- |
| 'The Merry Men' | Small | Med-Green | White | Unknown | - | Schwarz, Jim | --NR-- |
| 'The Next Generation' | Large | Dark-Green | White | Sport | July into August | Wilson, Chris | --NR-- |
| 'The Right One' | Medium | Blue/Green | Yellow | Hybrid | July | Elslager, Ed | --NR-- |
| 'Thunderbolt' | Large | Blue/Green | White | Sport | June into July | Crowder, Allen | .2020 |
| 'Tic Tac' | Miniature | Med-Green | White | Hybrid | July | Johnson, Greg | .2004 |
| 'Tight Squeeze' | Medium | Med-Green | White | Sport | July into August | Soucek, John | --NR-- |
| 'Tijuana Taxi' | Medium | Light-Green | Yellow | Sport | July | Vaughn, Kevin | --NR-- |
| 'Tiki Bar' | Small | Dark-Green | Yellow | TC Sport | July into August | Zilis, Mark & Solberg, Bob | .2022 |
| 'Time Warp' | Large | Med-Green | Yellow | Sport | June into July | Avent, Tony | --NR-- |
| 'Timeless Beauty' | Medium | Blue/Green | White | Sport | July into August | Heemskerk, Gerardus | .2011 |
| 'Timothy C. Morgan' | Medium | Blue/Green | White | Unknown | July into August | Chamberlain, Steve | .2005 |
| 'Tinkle' | Miniature | Med-Green | White | Sport | July | Unknown | --NR-- |
| 'Tiny Tim' | Medium | Med-Green | White | Sport | - | Summers, Alex | --NR-- |
| 'To Dye For' | Large | Light-Green | White | Unknown | July | Dye, Kay | .2017 |
| 'Tokudama Flavoplanata' | Medium | Blue/Green | Yellow | Sport | June into July | Maekawa, Dr Fumio & The American Hosta Society | .1987 |
| 'Top Banana' | Medium | Med-Green | White | Hybrid | July | Vaughn, Kevin | .1983 |
| 'Topaz Tiara' | Small | Med-Green | Chartreuse | Sport | July | Walters Gardens | .1998 |
| 'Topscore' | Medium | Med-Green | Yellow | Unknown | - | Unknown | --NR-- |
| 'Total Eclipse' | Medium | Dark-Green | Green | Sport | July | Goodenough, Rick | --NR-- |
| 'Total Justice' | Large | Med-Green | White | Sport | July into August | Dupre, Dirk | .2014 |
| 'Touch of Class' | Medium | Blue/Green | Yellow | TC Sport | July | Hansen, Hans & Shady Oaks Nursery | .1999 |
| 'Touch of Flame' | Medium | Med-Green | White | Sport | July | Lydell, Ransom | --NR-- |
| 'Transformer' | - | Dark-Green | White | Unknown | - | Beilstein, Doug & Beilstein, Mardy | .2009 |
| 'Travelin' Man' | Medium | Med-Green | Yellow | Unknown | - | Port, Linda | --NR-- |
| 'Trifecta' | Small | Med-Green | White | Sport | June | Birks, A. & Briggs Nursery-MA | .2008 |
| 'Trilogy' | Medium | Med-Green | Blue-Green | Hybrid | June | Gilligan, Madelon | .2018 |
| 'Tropic Sunset' | Medium | Dark-Green | Yellow | Sport | - | Zilis, Mark | .2012 |
| 'Tropical Storm' | Medium | Yellow | Green | Sport | July | Walters Gardens, Inc. & Bergeron, Amy | .2007 |
| 'True North' | Medium | Light-Green | Yellow | Sport | July into August | Schwarz, Jim | --NR-- |
| 'Tubelight' | Small | Blue/Green | White | Unknown | - | Van Eechaute, Danny | --NR-- |
| 'Tuff Stuff' | Large | Med-Green | White | Hybrid | July into August | Beilstein, Doug & Beilstein, Mardy | .2022 |
| 'Turkish Delight' | Small | Med-Green | White | Unknown | - | Terpening, Kent | --NR-- |
| 'Tuxedo' | Large | Dark-Green | White | Hybrid | June into July | Goodenough, Rick | .2010 |
| 'Twice as Nice' | Small | Blue/Green | Yellow | Sport | July into August | Solberg, Robert | --NR-- |
| 'Twist of Dwarf' | Small | Med-Green | White | Sport | June into July | Brinker, Larry | .2010 |
| 'Twisted Lizzard' | Medium | Dark-Green | White | Unknown | - | Unknown | --NR-- |
| 'Twisted Spearmint' | Medium | Dark-Green | White | Hybrid | July into August | Heemskerk, Gerardus | .2021 |
| 'Twister' | Medium | Dark-Green | Yellow | Sport | July into August | Van den Top, Jan | --NR-- |
| 'Twisting the Night Away' | Miniature | Dark-Green | White | Unknown | - | Klapwijk, Pieter | --NR-- |
| 'Two if by Sea' | Medium | Med-Green | White | Sport | June into July | Silvers, Bill | .2012 .2018 |
| 'Two Thumbs Up' | Small | Med-Green | White | Sport | July | Schwarz, Jim | --NR-- |
|