The Hosta Coastal Treasure forms a mound reaching a height of 52cm-60cm and spreads up to 75cm at maturity. This medium-sized Hosta features green leaves with an extensive yellow marginal variegation, which includes random streaks extending to the centre of the leaf. As summer progresses, the yellow margin transitions to a creamy white. The satin-green leaves with wavy, wide yellow borders eventually turn pure white, making this plant particularly attractive. During mid-summer, lavender flowers bloom on scapes that can reach 90cm in height. The plant exhibits partial resistance to slugs.