Best Regional Plants
| Plant Name | Genus | Award | Trial |
Region |
Year | Trial Cold Hardiness | Trial Heat Zone |
|---|---|---|---|---|---|---|---|
| Diamond Frost® Euphorbia hybrid | Euphorbia | 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 |
| Superbells® Yellow Chiffon™ Calibrachoa hybrid | Calibrachoa | Excellent | Massachusetts Horticultural Society at Elm Bank | Northeast | 2010 | 6a | 4 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | 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 |
| Superbells® Yellow Chiffon™ Calibrachoa hybrid | Calibrachoa | Excellent | Massachusetts Horticultural Society at Elm Bank | Northeast | 2010 | 6a | 4 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Excellent | Massachusetts Horticultural Society at Elm Bank | Northeast | 2010 | 6a | 4 |
| Superbena Royale® Iced Cherry Verbena hybrid | Verbena | Top Performer | Massachusetts Horticultural Society at Elm Bank | Northeast | 2011 | 6a | 4 |
| Snow Princess® Sweet Alyssum Lobularia hybrid | Lobularia | Top Performer | Massachusetts Horticultural Society at Elm Bank | Northeast | 2011 | 6a | 4 |
| Supertunia Vista® Silverberry Petunia hybrid | Petunia | Top Performer | Massachusetts Horticultural Society at Elm Bank | Northeast | 2011 | 6a | 4 |
| Superbena Royale® Iced Cherry Verbena hybrid | Verbena | Top Performer | Massachusetts Horticultural Society at Elm Bank | Northeast | 2011 | 6a | 4 |
| Snow Princess® Sweet Alyssum Lobularia hybrid | Lobularia | Top Performer | Massachusetts Horticultural Society at Elm Bank | Northeast | 2011 | 6a | 4 |
| Supertunia Vista® Silverberry Petunia hybrid | Petunia | Top Performer | Massachusetts Horticultural Society at Elm Bank | Northeast | 2011 | 6a | 4 |
| Superbells® Lemon Slice® Calibrachoa hybrid | Calibrachoa | Top 10 | Massachusetts Horticultural Society at Elm Bank | Northeast | 2012 | 6a | 4 |
| Superbells® Lemon Slice® Calibrachoa hybrid | Calibrachoa | Top Performer | Massachusetts Horticultural Society at Elm Bank | Northeast | 2012 | 6a | 4 |
| Blue My Mind® Dwarf Morning Glory Evolvulus hybrid | Evolvulus | Top Performer | Massachusetts Horticultural Society at Elm Bank | Northeast | 2012 | 6a | 4 |
| Luscious® Berry Blend™ Lantana camara | Lantana | Top Performer | Massachusetts Horticultural Society at Elm Bank | Northeast | 2012 | 6a | 4 |
| Luscious® Royale Piña Colada Lantana camara | Lantana | Top Performer | Massachusetts Horticultural Society at Elm Bank | Northeast | 2012 | 6a | 4 |
| Blushing Princess® Sweet Alyssum Lobularia hybrid | Lobularia | Top Performer | Massachusetts Horticultural Society at Elm Bank | Northeast | 2012 | 6a | 4 |
| Superbells® Cherry Star Calibrachoa hybrid | Calibrachoa | Top Performer | Massachusetts Horticultural Society at Elm Bank | Northeast | 2012 | 6a | 4 |
