The Sum and Substance Hosta is an iconic, colossal and highly decorated hosta, celebrated as one of the largest and most impressive perennials available. The foliage is massive, broad and round to heart-shaped leaves that are slightly cupped and slightly corrugated. The leaves have outstanding, very thick substance and a beautiful glossy finish. The color is a vibrant chartreuse to gold-yellow. The color is deepest chartreuse in shade and brightens to a brilliant, luminous gold in more sun.