Obedient Plant
Physostegia virginiana
This was found growing on the bank of Rice Creek, along with blue lobelia, boneset, Joe-pye weed and other wet-loving plants. You can reposition the flowers and they’ll stay where you place them. I guess that makes it obedient. 
Tags: nature photography, Wildflowers
June 16th, 2010 at 1:31 am
A “friend” gave me a huge bag full of this plant early this spring. I planted some and then wanted to find out more so looked it up
I sure was glad. Its very invasive and hard to get rid of. I took the plants out of my garden the next day and took the whole bag full and planted them across teh street in wet lands that I own. I sure didnt want my expensive plants killed off .
One person wrote it took his whole garden over in 2 years and he had to till the whole thing up over and over and leave it unplanted for a year
June 16th, 2010 at 8:10 am
As I understand it (and I am not a gardener), obedient plant may be an aggressive breeder in moist soil, but not so in drier soil. In a garden you might control its spread by regular dividing or putting up a barrier, such as planting it in a container with the bottom cut out.