Obedient Plant
Physostegia virginiana
Common Name: Obedient Plant
Genus: Physostegia
Species: virginiana
Category: Perennials
Height: 1.00 m (100 cm)
Spread: 0.50 m (50 cm)
Hardiness: Hardy
Growth Rate: Average
Flowering Period: July to September
Long Flowering Period
Foliage Type: Deciduous
Foliage Colour: Green
Flower Colour: Purple, Pink, White
Sun/Shade: Full sun
Soil Type: Normal/Loam or Clay/Heavy
Soil Moisture: Moist, but well drained
Features: Long flowering period
This spreading, sometimes invasive perennial spreads by rhizomes. A member of the nettle family, Physostegia virginiana has square stems. The common name comes about from the way that the individual flowers of this plant will stay in a new position if moved horizontally around the flower stalk. This is because each flower has a hinge attaching it to the flower stalk. Physostegia virginiana has mid-green leaves. The flowers are usually produced from mid summer for a long period, into early autumn. Flower colour varies from dark purple to bright pink and occasionally white.
The Latin name Physostegia is a reference to the bladder like shape of the calyx.
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