Developed by Dr. Tom Ranney at NCSU, Black Hat ® rhododendron is a small-leaved, compact 'PJM' type. What sets it apart, however, is that it is a triploid selection, making the rose-purple early spring flowers far longer lasting than conventional selections. Thick, dark, evergreen foliage takes on dramatic purple-black tones in cool weather. Grow it and see the difference!