Best Regional Plants
| Plant Name | Genus | Award | Trial |
Region |
Year | Trial Cold Hardiness | Trial Heat Zone |
|---|---|---|---|---|---|---|---|
| Lavender Chiffon® Hibiscus syriacus | Hibiscus | Top Pick | Dallas Arboretum | Southwest | 2005 | 8a | 9 |
| 'Prima Angelina' Stonecrop Sedum rupestre | Sedum | Arboretum Approved | Dallas Arboretum | Southwest | 2004 | 8a | 9 |
| Surefire® Rose Begonia benariensis | Begonia | Perfect Score | Oklahoma State University Botanical Gardens | Southwest | 2022 | 6b | 8 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Rising Star | Dallas Arboretum | Southwest | 2007 | 8a | 9 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | Rising Star | Dallas Arboretum | Southwest | 2007 | 8a | 9 |
| Augusta® Lavender Heliotrope Heliotropium hybrid | Heliotropium | Top Performer | Oklahoma State University Botanical Gardens | Southwest | 2021 | 6b | 8 |
| Luscious® Basket Tangeglow® Lantana camara | Lantana | Perfect Score | Oklahoma State University Botanical Gardens | Southwest | 2025 | 6b | 8 |
| Diamond Frost® Euphorbia hybrid | Euphorbia | North Texas Winners Circle | Dallas Arboretum | Southwest | 2004 | 8a | 9 |
| Summer Wave® Trailing Large Blue Wishbone Flower Torenia hybrid | Torenia | Flame Proof | Dallas Arboretum | Southwest | 2005 | 8a | 9 |
| Artist® Blue Flossflower Ageratum hybrid | Ageratum | North Texas Winners Circle | Dallas Arboretum | Southwest | 2004 | 8a | 9 |
| Butterfly Deep Rose Pentas lanceolata | Pentas | Arboretum Approved | Dallas Arboretum | Southwest | 2005 | 8a | 9 |
| Luscious® Goldengate™ Lantana camara | Lantana | Perfect Score all Season | Oklahoma State University Botanical Gardens | Southwest | 2019 | 6b | 8 |
| Butterfly Red Pentas lanceolata | Pentas | Flame Proof | Dallas Arboretum | Southwest | 2006 | 8a | 9 |
| Amazel Basil® Sweet Italian Basil Ocimum hybrid | Ocimum | Top Performer | Oklahoma State University Botanical Gardens | Southwest | 2018 | 6b | 8 |
| Sangria Ornamental Pepper Capsicum annuum | Capsicum | Best Overall Performers | Dallas Arboretum | Southwest | 2009 | 8a | 9 |
| Superbells® Coral Sun™ Calibrachoa hybrid | Calibrachoa | Top Performer | Oklahoma State University Botanical Gardens | Southwest | 2022 | 6b | 8 |
| Beth's Blue® Star Flower Isotoma axillaris | Isotoma | Arboretum Approved | Dallas Arboretum | Southwest | 2006 | 8a | 9 |
| GoldDust® Mecardonia hybrid | Mecardonia | Top Performer | Oklahoma State University Botanical Gardens | Southwest | 2010 | 6b | 8 |
| Zinfandel™ Oxalis vulcanicola | Oxalis | Arboretum Approved | Dallas Arboretum | Southwest | 2005 | 8a | 9 |
| 'Sweet Caroline Light Green' Sweet Potato Vine Ipomoea batatas | Ipomoea | Flame Proof | Dallas Arboretum | Southwest | 2003 | 8a | 9 |
