Best Regional Plants
| Plant Name | Genus | Award | Trial |
Region |
Year | Trial Cold Hardiness | Trial Heat Zone |
|---|---|---|---|---|---|---|---|
| Diamond Frost® Euphorbia hybrid | Euphorbia | Excellent Rating | Massachusetts Horticultural Society at Elm Bank | Northeast | 2008 | 6a | 4 |
| Artist® Blue Flossflower Ageratum hybrid | Ageratum | Excellent Rating | Massachusetts Horticultural Society at Elm Bank | Northeast | 2008 | 6a | 4 |
| Artist® Blue Flossflower Ageratum hybrid | Ageratum | Excellent Rating | Massachusetts Horticultural Society at Elm Bank | Northeast | 2008 | 6a | 4 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Excellent Rating | Massachusetts Horticultural Society at Elm Bank | Northeast | 2008 | 6a | 4 |
| Artist® Blue Flossflower Ageratum hybrid | Ageratum | Excellent Rating | Massachusetts Horticultural Society at Elm Bank | Northeast | 2008 | 6a | 4 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Excellent Rating | Massachusetts Horticultural Society at Elm Bank | Northeast | 2008 | 6a | 4 |
| Supertunia Vista® Silverberry Petunia hybrid | Petunia | Very Good | Massachusetts Horticultural Society at Elm Bank | Northeast | 2010 | 6a | 4 |
| ColorBlaze® Dipt in Wine Coleus scutellarioides | Coleus | Very Good | Massachusetts Horticultural Society at Elm Bank | Northeast | 2010 | 6a | 4 |
| Graceful Grasses® Purple Fountain Grass Pennisetum setaceum 'Rubrum' | Pennisetum | Very Good | Massachusetts Horticultural Society at Elm Bank | Northeast | 2010 | 6a | 4 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Very Good | Massachusetts Horticultural Society at Elm Bank | Northeast | 2010 | 6a | 4 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Very Good | Massachusetts Horticultural Society at Elm Bank | Northeast | 2010 | 6a | 4 |
| Graceful Grasses® Purple Fountain Grass Pennisetum setaceum 'Rubrum' | Pennisetum | Very Good | Massachusetts Horticultural Society at Elm Bank | Northeast | 2010 | 6a | 4 |
| Supertunia Vista® Silverberry Petunia hybrid | Petunia | Very Good | Massachusetts Horticultural Society at Elm Bank | Northeast | 2010 | 6a | 4 |
| ColorBlaze® Dipt in Wine Coleus scutellarioides | Coleus | Very Good | Massachusetts Horticultural Society at Elm Bank | Northeast | 2010 | 6a | 4 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Very Good | Massachusetts Horticultural Society at Elm Bank | Northeast | 2010 | 6a | 4 |
| Graceful Grasses® Purple Fountain Grass Pennisetum setaceum 'Rubrum' | Pennisetum | Very Good | Massachusetts Horticultural Society at Elm Bank | Northeast | 2010 | 6a | 4 |
| Supertunia Vista® Silverberry Petunia hybrid | Petunia | Very Good | Massachusetts Horticultural Society at Elm Bank | Northeast | 2010 | 6a | 4 |
| ColorBlaze® Dipt in Wine Coleus scutellarioides | Coleus | Very Good | Massachusetts Horticultural Society at Elm Bank | Northeast | 2010 | 6a | 4 |
| Superbells® Yellow Chiffon™ Calibrachoa hybrid | Calibrachoa | Excellent | Massachusetts Horticultural Society at Elm Bank | Northeast | 2010 | 6a | 4 |
| 'Tuscan Sun' Perennial Sunflower Heliopsis helianthoides | Heliopsis | Excellent | Massachusetts Horticultural Society at Elm Bank | Northeast | 2010 | 6a | 4 |
