Hosta Firefly forms a small upright mound, reaching a height of 20cm-25cm with a spread of up to 45cm at maturity. The plant features green leaves with a narrow pale cream to white margin, creating a robust clump over time. It can exhibit rapid growth under optimal conditions. In late summer, lavender flowers emerge on scapes of up to 40cm. This variety is likely resistant to slugs to a significant extent and can tolerate some sunlight in a dappled shade border.