H. ‘Rosedale Thunderheads’

Overview

Registered in 2000, this large hosta cultivar originated as a hybrid of the unnamed seedling *H. 'RD-BS'*. Its most distinctive feature is the combination of a large leaf size—9 inches (22.9 cm) long by 8 inches (20.3 cm) wide—with streaked marginal variegation, a pattern that sets it apart from many solid-margin or center-variegated cultivars.

In the Garden

'Rosedale Thunderheads' reaches a mature size typical of large hostas, forming a substantial clump suitable for mid-border or specimen placement in partial to full shade. The broad, streaked leaves provide textural contrast when paired with finer-textured perennials such as ferns or *Heuchera*. It is not suited for container culture due to its large mature dimensions.

Care Notes

Provide consistent moisture during the growing season, particularly in warmer weather, and apply a balanced, slow-release fertilizer in early spring as new growth emerges. As with most large-leaved hostas, slug and deer damage can occur; monitor and manage as needed. This cultivar performs reliably in typical hosta-growing zones.