Best Regional Plants
| Plant Name | Genus | Award | Trial |
Region |
Year | Trial Cold Hardiness | Trial Heat Zone |
|---|---|---|---|---|---|---|---|
| Space Age® Black Hole™ Rex begonia Begonia rex | Begonia | Flame Proof - Shade | Dallas Arboretum | Southwest | 2025 | 8a | 9 |
| Flambe® Yellow Strawflower Chrysocephalum apiculatum | Chrysocephalum | Arboretum Approved | Dallas Arboretum | Southwest | 2006 | 8a | 9 |
| ColorBlaze® Royale Pineapple Brandy™ Coleus scutellarioides | Coleus | Perfect Score All Season | Oklahoma State University Botanical Gardens | Southwest | 2020 | 6b | 8 |
| Diamond Frost® Euphorbia | Euphorbia | Arboretum Approved | Dallas Arboretum | Southwest | 2004 | 8a | 9 |
| Superbells® Yellow Chiffon™ Calibrachoa | Calibrachoa | Top Performer | Oklahoma State University Botanical Gardens | Southwest | 2010 | 6b | 8 |
| Diamond Frost® Euphorbia | Euphorbia | Top Performer | Oklahoma State University Botanical Gardens | Southwest | 2012 | 6b | 8 |
| Island Giants® Coffee Cups elephant's ear Colocasia esculenta | Colocasia | Top Performer | Oklahoma State University Botanical Gardens | Southwest | 2010 | 6b | 8 |
| Beth's Blue® Star Flower Isotoma axillaris | Isotoma | Arboretum Approved | Dallas Arboretum | Southwest | 2006 | 8a | 9 |
| Butterfly Deep Rose Pentas lanceolata | Pentas | Flame Proof | Dallas Arboretum | Southwest | 2006 | 8a | 9 |
| Snow Princess® Sweet Alyssum Lobularia | Lobularia | Rising Star | Dallas Arboretum | Southwest | 2011 | 8a | 9 |
| Snow Princess® Sweet Alyssum Lobularia | Lobularia | October Plant of the Month | Dallas Arboretum | Southwest | 2009 | 8a | 9 |
| Butterfly Red Pentas lanceolata | Pentas | Flame Proof | Dallas Arboretum | Southwest | 2006 | 8a | 9 |
| Black Pearl Pepper Capsicum | Capsicum | Field Day Top Pick | Dallas Arboretum | Southwest | 2006 | 8a | 9 |
| 'Sweet Caroline Light Green' Sweet Potato Vine Ipomoea batatas | Ipomoea | Flame Proof | Dallas Arboretum | Southwest | 2003 | 8a | 9 |
| Catalina® Midnight Blue Wishbone Flower Torenia | Torenia | Top Pick | Dallas Arboretum | Southwest | 2005 | 8a | 9 |
| Diamond Frost® Euphorbia | Euphorbia | Top Performer | Oklahoma State University Botanical Gardens | Southwest | 2010 | 6b | 8 |
| Graceful Grasses® Ogon Golden Variegated Sweet Flag Acorus gramineus | Acorus | Arboretum Approved | Dallas Arboretum | Southwest | 2006 | 8a | 9 |
| Daredevil® Claret Zonal Geranium Pelargonium zonale | Pelargonium | Top Performer | Oklahoma State University Botanical Gardens | Southwest | 2010 | 6b | 8 |
| 'Prima Angelina' Stonecrop Sedum rupestre | Sedum | Arboretum Approved | Dallas Arboretum | Southwest | 2004 | 8a | 9 |
| Island Giants® Coffee Cups elephant's ear Colocasia esculenta | Colocasia | Top Performer | Oklahoma State University Botanical Gardens | Southwest | 2010 | 6b | 8 |
