| No. | Cultivar | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
|
1
| 'Doctor Bill-Bob' | Large | Blue/Green | | | Unknown | Near-White | Unknown | Seaver, Mildred & Walek, Kevin & The American Hosta Society | .2009 |
|
2
| 'Doctor Bob' | | - | | | Duplicate | - | | Duplicate Name | |
|
3
| 'Doctor Fu Manchu' | Medium | Dark-Green | | | Hybrid | Light-Purple | September | Sugita, Hajime & Ruh, Peter | .1998 |
|
4
| 'Doctor Reath' | Large | Blue/Green | Streaked | Yellow | Nat-Sport | Near-White | June to July | Reath, David & Ruh, Peter | .1997 |
|
5
| 'Doctor Yahr' | Large | Blue/Green | | | Unknown | Unknown | Unknown | Miller, Jeff & Wisconsin Hosta Society | --NR-- |
|
6
| 'Dr Bob' | | - | | | Duplicate | - | | Duplicate Name | |
|
7
| 'Dr Jamison Harrison' | | - | | | Duplicate | - | | Duplicate Name | |
|
8
| 'Dr John' | Large | Dark-Green | | | Unknown | Pure-White | July | Zolock, Steve & Zolock, Sarah | .2007 |
|
9
| 'Dr. Hale' | Large | Blue/Green | | | Unknown | Near-White | June to July | Unknown | --NR-- |
|
10
| 'Dr. Hirao Tetraploid' | | - | | | Duplicate | - | | Duplicate Name | |
|
11
| 'Dr. Shuichi Hirao' | | - | | | Duplicate | - | | Duplicate Name | |
|
12
| 'Rival Doctor' | Small | Med-Green | Streaked | White | Unknown | Unknown | Unknown | Malloy, Alex | --NR-- |
|