| Cultivar Name | Breeder(s) | Year of Release | Description |
| M40-Marianna | R Fenton | 1998 | UCD/USDA collaboration |
| PA1-82 (Nickels) | D Kester | 2000 | UCD/USDA collaboration |
| Prunus Mahaleb 156-5 | S Southwick | 2002 | UCD/USDA collaboration |
| Prunus Mahaleb 159-5 | S Southwick | 2002 | UCD/USDA collaboration |
| Prunus Mahaleb 155-1 | S Southwick | 2002 | UCD/USDA collaboration |
| K146-43 | TM DeJong | 2003 | UCD/USDA collaboration |
| P30-135 | TM DeJong | 2003 | UCD/USDA collaboration |