No. | Cultivar Name | Source | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Registered |
1
| 'Tardiflora Twisted' | Unknown | Small | Med-Green | | | Sport | Med-Lavender | September | --NR-- |
2
| 'Tea at Bettys' | Ford, Richard & Ford, Mary | Small | Med-Green | Marginal | Yellow | Sport | Light-Purple | July to August | .2009 |
3
| 'Terry Wogan' | Ford, Richard & Ford, Mary | Medium | Blue/Green | | | Sport | Pale-Lavender | August | .2006 |
4
| 'The Emerald Kris' | Jolliffe, Thomas | Large | Unknown | | | Hybrid | Unknown | Unknown | --NR-- |
5
| 'Thea' | Stratham, Netta & Bond, Sandra | Medium | Med-Green | Streaked | White | Sport | Pale-Lavender | July to August | .1985 |
6
| 'Touchstone' | Bowden, Roger | Medium | Med-Green | Marginal | White | Sport | Light-Purple | July to August | --NR-- |
7
| 'Triple Double' | Jolliffe, Thomas | Medium | Blue/Green | | | Hybrid | Unknown | Unknown | --NR-- |
8
| 'Triple Quartet' | Jolliffe, Thomas | Large | Unknown | | | Hybrid | Unknown | Unknown | --NR-- |
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