| Wahlenbergia |
| Wahlenbergia hederacea |
| Waldsteinia |
| Warszewiczia coccinea |
| Washingtonia |
| Washingtonia filifera |
| Washingtonia robusta |
| Watsonia |
| Weigela |
| Weigela florida Foliis purpureis |
| Weinmannia racemosa |
| Westringia |
| Westringia fruticosa |
| Widdringtonia |
| Widdringtonia cupressoides |
| Widdringtonia juniperoides |
| Widdringtonia schwarzii |
| Widdringtonia whytei |
| Widdrintonia cupressoides |
| Wigginsia vorwerkiana |
| Wilcoxia poselgeri |
| Wildringtonia |
| Wisteria |
| Wisteria floribunda |
| Wisteria sinensis |
| Wisteria venusta |
| Withania somnifera |
| Woodwardia |
| Worsleya |
| Worsleya procera |
| Wyethia helenioides |