No. | Cultivar Name | Source | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Registered |
1
| 'T N T' | Zilis, Mark | Medium | Dark-Green | Medial | Yellow | Sport | Pale-Lavender | July to August | .2010 |
2
| 'TBSP Butter' | Dye, Kay | Miniature | Yellow-Gold | | | Hybrid | Light-Purple | June to July | .2021 |
3
| 'Teatime' | Zilis, Mark | Medium | Blue/Green | Marginal | Yellow | Sport | Pale-Lavender | July to August | .2006 |
4
| 'Temple of Karnak' | Van Ostrand, John | Medium | Dark-Green | | | Nat-Sport | Near-White | July | --NR-- |
5
| 'Ten Karat Gold' | Zilis, Mark & Ruh, Peter & Ruh, Jean | Medium | Yellow | | | Hybrid | Unknown | Unknown | .2008 |
6
| 'Tennessee Waltz' | Zilis, Mark | Medium | Med-Green | | | TC Sport | Med-Lavender | August | --NR-- |
7
| 'Terry witha Y' | Herold, Glenn | Medium | Blue/Green | | | Nat-Sport | Pale-Lavender | July to August | .2021 |
8
| 'Thank You' | Micheletti, Tom | Large | Dark-Green | Marginal | White | Hybrid | Light-Purple | July to August | .2007 |
9
| 'The Big Easy' | Zilis, Mark & Cunningham, L. | Medium | Dark-Green | Marginal | Green | TC Sport | Unknown | July to August | .2009 |
10
| 'The Devil's Edge' | Zilis, Mark | Medium | Dark-Green | Marginal | Green | TC Sport | Unknown | July to August | .2009 |
11
| 'The Freak' (Zilis) | Zilis, Mark | Medium | Yellow | | | TC Sport | Pale-Lavender | July | --NR-- |
12
| 'The Gambler' | Zilis, Mark & Schwarz, Karen | Large | Yellow | | | Sport | Pale-Lavender | July to August | .2014 |
13
| 'The Gathering' | Zilis, Mark & Schwarz, Karen | Large | Blue/Green | | | Sport | Near-White | June to July | .2014 |
14
| 'Thelma M. Pierson' | Pierson, Robert | Large | Yellow | | | Sport | Light-Purple | June to July | .1988 |
15
| 'Three Sisters' | Pratt, Mary | Giant | Blue/Green | | | Sport | Pale-Lavender | July | --NR-- |
16
| 'Tidal Pool' | Dye, Kay | Large | Blue/Green | | | Hybrid | Pale-Lavender | June to July | .2002 |
17
| 'Tidewater' | Zilis, Mark | Large | Blue/Green | | | Hybrid | Med-Lavender | August | .2003 |
18
| 'Tiki Bar' | Zilis, Mark & Solberg, Bob | Small | Dark-Green | Medial | Yellow | TC Sport | Light-Purple | July to August | .2022 |
19
| 'Tim and Claire' | Zilis, Mark | Medium | Dark-Green | | | Unknown | Unknown | Unknown | --NR-- |
20
| 'To Dye For' | Dye, Kay | Large | Light-Green | Medial | White | Unknown | Near-White | July | .2017 |
21
| 'Tom's Dream' | Zilis, Mark | Medium | Med-Green | Streaked | Yellow | TC Sport | Light-Purple | July to August | .2003 |
22
| 'Tower of London' | Zilis, Mark | Medium | Med-Green | Streaked | Speckles | TC Sport | Pale-Lavender | July to August | .2009 |
23
| 'Tracy's Emerald Cup' | Heuermann, Tracy | Large | Dark-Green | | | Hybrid | Pale-Lavender | July | .1997 |
24
| 'Trailblazer' | Zilis, Mark | Large | Dark-Green | Marginal | White | TC Sport | Pale-Lavender | July | .1999 |
25
| 'Travelin' Man' | Port, Linda | Medium | Med-Green | Medial | Yellow | Unknown | Unknown | Unknown | --NR-- |
26
| 'Tropic Sunset' | Zilis, Mark | Medium | Dark-Green | Medial | Yellow | Sport | Unknown | Unknown | .2012 |
27
| 'Tropicana' | Zilis, Mark | Large | Light-Green | Marginal | White | Hybrid | Pale-Lavender | July to August | .2010 |
28
| 'Turner Junction' | Zilis, Mark | Large | Blue/Green | | | TC Sport | Near-White | June to July | .2003 |
29
| 'Twirlatini' | Zilis, Mark | Small | Blue/Green | | | Hybrid | Light-Purple | July to August | .2010 |
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