Adorable
H. 'Adorable'
Looks like a larger version of H. 'Olive Branch'

Alternative: H. 'Hoosier Harmony'
Plant Size
  Large: 24" x 63"  
Leaf
  9" x 7", chartreuse, green margins  
Flower
  White, fragrant  
Parentage
  Sport of H. 'Royal Standard'  
AdorableAdorable