| | | Family | Labiatae | | Plant Type | herbaceous perennial | | Zone | USDA: 3a - 9b RHS: H - FH EGF: H1 - H5 Australia: 1 - 3 | | Care Level | medium | | Height | 45 - 60 cm (1.5 - 2 ft) | | Spread | 45 - 60 cm (1.5 - 2 ft) | | Light | full sun | | Soil Moisture | average, well-drained | | Soil Type | | | Soil pH | | | | Description | Physostegia virginiana 'Alba' (obedient plant) bears showy blossoms during early summer to early autumn. | | Special Characteristics | Birds are attracted to Physostegia virginiana 'Alba' . | | Cautions | Where conditions are favourable, Physostegia virginiana 'Alba' (obedient plant) can be invasive and may require maintenance to keep it under control. | | |