Dark Ponticum Purple Beebalm. This is another mildew resistant Beebalm with compact sturdy growth and pure violet-purple flowers over a long period in the summer months. It flowers with the typical whorled arrangement of the species and is a great attractant for hummingbirds, bees and butterflies. It will reach 2-3' in height and prefers uniform moisture. The foliage has a slight bluish hue. The Mt. Cuba Center in Delaware reports that after it became established, it performs consistenly at the top of all of the selections. This is another great NATIVE species that one cannot miss planting in one's garden. These containers can be readily divided when planting if one wants more clumps.