Rose flowers, grows 3 ft. This moisture loving perennial has lovely flower spikes. Flowers remain at any angle turned. Can be planted in sun or shade. Plant 12" apart. Hardy in zones: 4-9. Blooms August through September. Physostegia virginiana was given the name "obedient plant" because if a flower is pushed to one side it stays in that position. It is a very hardy and easy to grow perennial.