Obedient plant, Physostegia virginiana
 
The obedient plant looks stunning with its tubular white, pink, or purple flowers, which bloom in August and September. It looks fantastic planted in mass, and as a mint, it can spread quickly if planted in favourable conditions. The flowers can be bent and will remain in the new position for some time, hence the name obedient plant.
 
Ecology:
Obedient plants support many kinds of pollinators, including hummingbirds and butterflies. Copious amounts of nectar also attract small bees, medium-sized bees and bumble bees, but only bigger bees will be efficient pollinators. Birds eat the seeds.
 
Growing conditions:
Obedient plants naturally occur in swamps, wet thickets, and riverbanks. It prefers full sun to partial shade in wet to moist soil. In the garden, it is easy to grow and can even tolerate average garden moisture or poor drainage. It is easy to pull if it spreads into unwanted areas.