(Hosta) Hosta 'Regal Splendor' flower Height: 5-6'. A stunning sport of Hosta 'Krossa Regal'. Demonstrates the same upright vase-shaped habit as 'Krossa Regal', but the frosty blue leaves are edged with a creamy yellow margin. Lavender flowers. Very elegant looking. 2003 American Hosta Growers Group Hosta of the Year.