Best Regional Plants
| Plant Name | Genus | Award | Trial |
Region |
Year | Trial Cold Hardiness | Trial Heat Zone |
|---|---|---|---|---|---|---|---|
| Summer Wave® Trailing Large Violet Wishbone Flower Torenia | Torenia | Flame Proof | Dallas Arboretum | Southwest | 2005 | 8a | 9 |
| Supertunia Vista® Silverberry Petunia | Petunia | Top Performer | Oklahoma State University Botanical Gardens | Southwest | 2008 | 6b | 8 |
| Sweet Caroline Upside™ Key Lime Ornamental Sweet Potato Vine Ipomoea batatas | Ipomoea | Top Performer - In Ground - Part Shade | Dallas Arboretum | Southwest | 2024 | 8a | 9 |
| Black Pearl Pepper Capsicum | Capsicum | Arboretum Approved | Dallas Arboretum | Southwest | 2005 | 8a | 9 |
| Daredevil® Salmon Zonal Geranium Pelargonium zonale | Pelargonium | Top Performer | Oklahoma State University Botanical Gardens | Southwest | 2010 | 6b | 8 |
| Snow Princess® Sweet Alyssum Lobularia | Lobularia | Top Performer | Oklahoma State University Botanical Gardens | Southwest | 2009 | 6b | 8 |
| Sweet Caroline Upside™ Black Coffee Ornamental Sweet Potato Vine Ipomoea batatas | Ipomoea | Top Performer - Container - Part Shade | Dallas Arboretum | Southwest | 2024 | 8a | 9 |
| Supertunia Vista® Cool Jazz® Petunia | Petunia | Top Performer | Oklahoma State University Botanical Gardens | Southwest | 2025 | 6b | 8 |
| Limon Blush™ Coleus scutellarioides | Coleus | Top Performer | Oklahoma State University Botanical Gardens | Southwest | 2008 | 6b | 8 |
| Señorita Rosalita® Spider Flower Cleome | Cleome | Top Performer | Oklahoma State University Botanical Gardens | Southwest | 2008 | 6b | 8 |
| 'Flamenco Samba' Cuphea llavea | Cuphea | Flame Proof | Dallas Arboretum | Southwest | 2006 | 8a | 9 |
| Artist® Blue Flossflower Ageratum | Ageratum | North Texas Winners Circle | Dallas Arboretum | Southwest | 2004 | 8a | 9 |
| White Chiffon® Rose of Sharon Hibiscus syriacus | Hibiscus | Top Pick | Dallas Arboretum | Southwest | 2005 | 8a | 9 |
| Snow Princess® Sweet Alyssum Lobularia | Lobularia | Top Performer | Oklahoma State University Botanical Gardens | Southwest | 2009 | 6b | 8 |
| Diamond Frost® Euphorbia | Euphorbia | Top Pick | Dallas Arboretum | Southwest | 2005 | 8a | 9 |
| Lavender Chiffon® Hibiscus syriacus | Hibiscus | Top Pick | Dallas Arboretum | Southwest | 2005 | 8a | 9 |
| Snow Princess® Sweet Alyssum Lobularia | Lobularia | Rising Star | Dallas Arboretum | Southwest | 2011 | 8a | 9 |
| Catalina® White Linen Wishbone Flower Torenia | Torenia | FlameProof Plants | Dallas Arboretum | Southwest | 2020 | 8a | 9 |
| Diamond Frost® Euphorbia | Euphorbia | Top Performer | Oklahoma State University Botanical Gardens | Southwest | 2010 | 6b | 8 |
| Diamond Frost® Euphorbia | Euphorbia | North Texas Winners Circle | Dallas Arboretum | Southwest | 2004 | 8a | 9 |
