Best Regional Plants
| Plant Name | Genus | Award | Trial | Region | Year | Trial Cold Hardiness | Trial Heat Zone |
|---|---|---|---|---|---|---|---|
| Diamond Frost® Euphorbia hybrid | Euphorbia | Exceptional Rating | University of Georgia | Southeast | 2008 | 7b | 8 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Best of the Best | University of Georgia | Southeast | 2008 | 7b | 8 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Best of the Best | University of Georgia | Southeast | 2008 | 7b | 8 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Best of the Best | University of Georgia | Southeast | 2008 | 7b | 8 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Top Performer | Oklahoma State University Botanical Gardens | Southwest | 2008 | 6b | 8 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Top Performer | Oklahoma State University Botanical Gardens | Southwest | 2008 | 6b | 8 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Top Performer | Oklahoma State University Botanical Gardens | Southwest | 2008 | 6b | 8 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Silver Medal | University of Illinois-Champaign County Master Gardeners | Midwest | 2007 | 5b | 6 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Silver Medal | University of Illinois-Champaign County Master Gardeners | Midwest | 2007 | 5b | 6 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Silver Medal | University of Illinois-Champaign County Master Gardeners | Midwest | 2007 | 5b | 6 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Silver Medal | University of Illinois-Champaign County Master Gardeners | Midwest | 2007 | 5b | 6 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Top Performer | Michigan State University | Midwest | 2007 | 5b | 4 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Top Performer | Michigan State University | Midwest | 2007 | 5b | 4 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Top Performer | Michigan State University | Midwest | 2007 | 5b | 4 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Top Performer | Michigan State University | Midwest | 2007 | 5b | 4 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Best of the Zoo | Cincinnati Zoo and Botanical Garden | Northeast | 2007 | 6a | 6 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Best of the Zoo | Cincinnati Zoo and Botanical Garden | Northeast | 2007 | 6a | 6 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Best of the Zoo | Cincinnati Zoo and Botanical Garden | Northeast | 2007 | 6a | 6 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Best of the Zoo | Cincinnati Zoo and Botanical Garden | Northeast | 2007 | 6a | 6 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Best Old Variety | Penn State University | Northeast | 2007 | 6a |
5 6 |
