H. ‘Midnight Hour’

Overview

Registered in 2009 from unknown parentage, *Hosta* 'Midnight Hour' is a giant cultivar distinguished by its intensely corrugated, nearly round leaves of deep blue-green with slightly rippled margins. The leaves reach 15.5 inches (39.4 cm) in length and 9.5 inches (24.1 cm) in width, with 14 pairs of veins and a dull surface on both sides.

In the Garden

This cultivar forms a dense, mound-like clump reaching 36 inches (91.4 cm) in height and 54 inches (137.2 cm) in diameter, with a moderate growth rate. It performs best in partial to full shade, as is typical for blue-leaved hostas, where the blue coloration is best preserved. Its substantial size makes it suitable as a specimen plant or as a backdrop for smaller perennials such as ferns, heucheras, or astilbes. The green scapes rise to 38 inches (96.5 cm) and bear prolific flowers.

Care Notes

Provide consistent moisture, especially during dry periods, and apply a balanced fertilizer in early spring as new growth emerges. The thick, corrugated leaves offer moderate resistance to slugs, though standard slug control measures may still be warranted in damp conditions. Deer may browse this cultivar, as with most hostas.