Stachytarpheta jamaicensis
Blue Porterweed, Blue Snakeweed, Common Snakeweed, Jamaica Vervain
Family: Verbenaceae Vervain
| Type | Shrub |
| USDA Hardiness range | 9B - 11 |
| Exposure | Partial shade to full sun |
| Bloom color | Blue, pink |
| Bloom time | Summer and Fall |
| Water needs | Moist |
| Landscape uses | Border, massing, specimen |
| Height | 4' to 6' / 1.20m to 1.80m |
| Spread | 36" to 6' / 90cm to 1.80m |
| Growth rate | Fast |
| Persistence | Evergreen, semi-evergreen |
| Leaf color | Green |
| Fruit color | n/a |
| Soil pH requirements | Acidic, neutral, alkaline, slightly alkaline |
| Soil type | Sandy, clay, loamy |
| Form | Rounded |
| Attributes and features | Naturalizing |