| No. | Cultivar | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
|
1
| 'Blarney Stone' | Giant | Med-Green | | | Unknown | Near-White | Unknown | Goodenough, Rick | --NR-- |
|
2
| 'Cobblestones' | Giant | Blue/Green | | | Unknown | Near-White | June to July | Ward, Dr Dick & Ward, Jane | .2012 |
|
3
| 'Cornerstone' | Giant | Blue/Green | | | Hybrid | Near-White | July | Hanna, Clarence | .2013 |
|
4
| 'David Stone' | Medium | Light-Green | | | Sport | Near-White | June to July | Summers, Alex | --NR-- |
|
5
| 'Fire and Brimstone' | Large | Blue/Green | Streaked | Yellow | TC Sport | Near-White | July | Zilis, Mark | .2003 |
|
6
| 'Gemstone' | Small | Blue/Green | | | Hybrid | Light-Purple | July | Avent, Tony | .2005 |
|
7
| 'Jade Stone' | Large | Light-Green | Marginal | Green | TC Sport | Pale-Lavender | August to September to October | Anderson, Jim | --NR-- |
|
8
| 'Limestone Lover' | Medium | Dark-Green | | | Hybrid | Near-White | August to September to October | Schulz, Ed | .2002 |
|
9
| 'Mossy Stone' | Large | Med-Green | | | Hybrid | Unknown | Unknown | Schulz, Ed | .2009 |
|
10
| 'Pixie Moonstone' | Small | Blue/Green | | | Hybrid | Med-Lavender | July to August | Johnson, Ross | .2015 |
|
11
| 'Rhinestone Cowboy' | Medium | Med-Green | Marginal | Creamy White | Hybrid | Pale-Lavender | July | Elslager, Ed | .2000 |
|
12
| 'Rhinestone Cowboy Supreme' | Medium | Light-Green | Streaked | Yellow | Sport | Pale-Lavender | July | Elslager, Ed & Schwarz, Jim | --NR-- |
|
13
| 'Stone's Blue' | | - | | | Duplicate | - | | Duplicate Name | |
|
14
| 'Stone's Fantasy' | | - | | | Duplicate | - | | Duplicate Name | |
|
15
| 'Stone's Valentine' | Medium | Yellow | | | Unknown | Med-Lavender | July | Stone, David & Ruh, Peter | .1989 |
|
16
| 'Stone's Yellow Leaf' | Medium | Light-Green | | | Unknown | Unknown | Unknown | Stone, David & Ruh, Peter & Ruh, Jean | .2004 |
|
17
| 'Stonewall' | Giant | Blue/Green | | | Hybrid | Light-Purple | June to July | Malloy, Alex | .2001 |
|
18
| 'Touchstone' | Medium | Med-Green | Marginal | White | Sport | Light-Purple | July to August | Bowden, Roger | --NR-- |
|