Dan Wols of Illinois,
this non-registered cultivar is a seedling of H. 'Marilyn
Monroe' × (H. 'Neptune' ×
H. 'Designer Genes'). A medium size hosta,
'Effervescence' grows to about 12 inches in height by 20
inches in width. The long, heart-shaped leaves are
bright yellow in color and have ruffled margins.