Name: Bonnie Sojourner Harris Brake Lake, Arkansas (Zone 7a) Magnolia zone
I agree with Tom and John. If you do not want to keep them in pots indefinitely plant them in the ground. Put a brick or rock over the rhizome to keep it from heaving when the roots begin to push into the soil.
Thro' all the tumult and the strife I hear the music ringing; It finds an echo in my soul— How can I keep from singing?