Best Regional Plants
| Plant Name | Genus | Award | Trial | Region | Year | Trial Cold Hardiness | Trial Heat Zone |
|---|---|---|---|---|---|---|---|
| Diamond Frost® Euphorbia hybrid | Euphorbia | Top Performer summer | Michigan State University | Midwest | 2009 | 5b | 4 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Top Performer summer | Michigan State University | Midwest | 2009 | 5b | 4 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Top Performer summer | Michigan State University | Midwest | 2009 | 5b | 4 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Top Performer - Late Summer | Michigan State University | Midwest | 2009 | 5b | 4 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Top Performer - Late Summer | Michigan State University | Midwest | 2009 | 5b | 4 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Top Performer - Late Summer | Michigan State University | Midwest | 2009 | 5b | 4 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Excellent Rating | Boerner Botanical Garden | Midwest | 2009 | 5b | 4 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Excellent Rating | Boerner Botanical Garden | Midwest | 2009 | 5b | 4 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Excellent Rating | Boerner Botanical Garden | Midwest | 2009 | 5b | 4 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Gold Medal | Champaign County Illinois Master Gardener Idea Garden | Midwest | 2009 | 5b | 6 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Gold Medal | Champaign County Illinois Master Gardener Idea Garden | Midwest | 2009 | 5b | 6 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Gold Medal | Champaign County Illinois Master Gardener Idea Garden | Midwest | 2009 | 5b | 6 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Best Varieties | Penn State | Northeast | 2009 | 6a |
5 6 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Best Varieties | Penn State | Northeast | 2009 | 6a |
5 6 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Best Varieties | Penn State | Northeast | 2009 | 6a |
5 6 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Top Performer | Ohio State University Extension - Springfield | Northeast | 2009 | 5b | 5 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Top Performer | Ohio State University Extension - Springfield | Northeast | 2009 | 5b | 5 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Top Performer | Ohio State University Extension - Springfield | Northeast | 2009 | 5b | 5 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Best-Looking Foliage | University of Delaware | Northeast | 2009 | 7a | 6 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Best-Looking Foliage | University of Delaware | Northeast | 2009 | 7a | 6 |
