| | | Family | Scrophulariaceae | | Plant Type | herbaceous perennial | | Zone | USDA: 3a - 8b RHS: H EGF: H1 - H4 Australia: 1 - 2 | | Care Level | low, easy, suitable for beginners. | | Height | 60 - 90 cm (2 - 3 ft) | | Spread | 45 - 75 cm (1.5 - 2.5 ft) | | Light | partial shade | | Soil Moisture | average to moist, well-drained | | Soil Type | clay to sandy | | Soil pH | acidic to alkaline | | | Description | Chelone glabra (turtlehead) bears showy and white flowers during late summer to mid-fall. This herbaceous perennial has greyish green foliage. | | Special Characteristics | Butterflies are attracted to Chelone glabra . | | Cautions | Depending upon your local conditions, Chelone glabra (turtlehead) may be invasive. | | |