Best Regional Plants
| Plant Name | Genus | Award | Trial | Region | Year | Trial Cold Hardiness | Trial Heat Zone |
|---|---|---|---|---|---|---|---|
| Diamond Frost® Euphorbia hybrid | Euphorbia | Top Performer | University of Illinois-Champaign County Master Gardeners | Midwest | 2005 | 5b | 6 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Top Performer | University of Illinois-Champaign County Master Gardeners | Midwest | 2005 | 5b | 6 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Top Performer | University of Illinois-Champaign County Master Gardeners | Midwest | 2005 | 5b | 6 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Superior | Colorado State University | Mountain | 2005 | 5b | 5 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Superior | Colorado State University | Mountain | 2005 | 5b | 5 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Superior | Colorado State University | Mountain | 2005 | 5b | 5 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Superior | Colorado State University | Mountain | 2005 | 5b | 5 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Trial Manager's Favorite | Colorado State University | Mountain | 2005 | 5b | 5 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Trial Manager's Favorite | Colorado State University | Mountain | 2005 | 5b | 5 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Trial Manager's Favorite | Colorado State University | Mountain | 2005 | 5b | 5 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Trial Manager's Favorite | Colorado State University | Mountain | 2005 | 5b | 5 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Top 5 Performer | Penn State University | Northeast | 2005 | 6a |
5 6 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Top 5 Performer | Penn State University | Northeast | 2005 | 6a |
5 6 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Top 5 Performer | Penn State University | Northeast | 2005 | 6a |
5 6 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Top 5 Performer | Penn State University | Northeast | 2005 | 6a |
5 6 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Classic City Awards | University of Georgia | Southeast | 2005 | 7b | 8 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Classic City Awards | University of Georgia | Southeast | 2005 | 7b | 8 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Classic City Awards | University of Georgia | Southeast | 2005 | 7b | 8 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Classic City Awards | University of Georgia | Southeast | 2005 | 7b | 8 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Top Performer | Mississippi State University - Crystal Springs | Southeast | 2005 | 7b | 9 |
