H. ‘High Radiation’

Overview

Registered in 2009 by K. Walek, 'High Radiation' is a medium-sized hosta cultivar of unknown parentage. It is visually distinctive for its heavily rippled, medium green leaf margins that contrast with a lighter center, creating a variegated appearance.

In the Garden

This cultivar reaches a mature spread of 34 inches (86.4 cm) and a height of 13 inches (33.0 cm), making it suitable for mid-border positions in partial to full shade. Its medium size and textured foliage pair well with ferns, heucheras, and other shade-tolerant perennials. It is not typically recommended for container cultivation unless in a large pot.

Care Notes

Water regularly during dry periods, particularly in the first growing season. Apply a balanced, slow-release fertilizer in early spring as new growth emerges. Like most hostas, it is susceptible to slug and deer damage and may require protective measures in areas where these pests are prevalent.