Colossal
H. 'Colossal'
Medium green leaves make a massive mound if ground grown. You can effectively limit the dimensions by restricting growth in a pot but then the effect is not as spectacular.
Plant Size
  Giant: 28" x 80"  
Leaf
  11" x 9"; green  
Flower
  Pale lavender  
Parentage
  unknown  
ColossalColossal