| Scientific Name: | Houstonia serpyllifolia |
| Common Name: | thyme-leaved bluets |
| Family Name: | Rubiaceae |
| Origin: | U.S. - northeast, U.S. - southeast |
| Hardiness Zone: | Zone 5: (-29 to -23 °C) |
| Plant Type: | Ground cover |
| Mature Size: | < 0.1m x 0.1 - 0.3m (height x width) |
| Habit: | Spreading |
| Form: | Creeping / Mat-like |
| Texture: | Fine |
| Landscape Uses: | Ground cover |
| Exposure: | Full sun |
| Soil or Media: | Well-drained |
| Leaves: | Simple, Opposite, Soft flexible, Glabrous, Ovate, Entire |
| Flowers: | Flowers solitary, Blue, Violet, May-Jun |
| Fruit: | Capsule, Brown, Jul-Aug |
| Key ID Features: | |
| Creeping by runners to form dense masses; leaves opposite, ovate, most blades 2-9mm long x 0.5-7mm wide (reminiscent of wild thyme); flowers 1-1.5cm wide, 4 petals, violet with yellow or white centre. | |