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Obedient plant

Physostegia virginiana

Also called False Dragonhead, Obedience, Virginia False Dragonhead

Obedient plant
Photo: Hardyplants at English Wikipedia, Public domain

Obedient plant is a clump-forming North American perennial in the mint family with tall spikes of pink, snapdragon-like flowers in late summer. It spreads by rhizomes and can be aggressive in garden beds.

Family
Lamiaceae (Mint family)
Grows as
Perennial
Light
Full sun, Part shade
Water
Keep soil evenly moist during the growing season; tolerates wet soil.
Soil
Fertile, moist, well-drained loam.
Temperature
Hardy to about -35 °C (USDA zones 3 to 9).
How easy
Easy
Safety
Not known to be toxic
Native range
Canada to NE. Mexico
Climate
temperate

About

Physostegia virginiana, the obedient plant, obedience or false dragonhead, is a species of flowering plant in the mint family, Lamiaceae. It is native to North America, where it is distributed from eastern Canada to northern Mexico. Physostegia are known commonly as obedient plants because a flower pushed to one side will often stay in that position. The name “false dragonhead” refers to the dragonheads of the related Dracocephalum, a genus to which the plant once belonged.

How to grow it

It is considered a good plant for adding late-season flowers to a garden. Fertile soils produce robust growth and wide spreading, and the plant may require staking. When it grows tall it has a "tendency toward floppiness" that can be controlled with pruning. It can be aggressive and dominate a landscape.

Text excerpted from the Wikipedia article Physostegia virginiana by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.

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