H. ‘Rosedale Thunderheads’
Hosta ‘Rosedale Thunderheads’ is a registered cultivar () .
| Year registered | 2000 |
|---|---|
| Section class | II-7 (Large) |
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.
Size and leaf
| Leaf length | 9 in (22.9 cm) |
|---|---|
| Leaf width | 8 in (20.3 cm) |
From the American Hosta Society Registry record.
Parentage
- Pod parent: Hybrid of H. 'RD-BS'
Similar cultivars
Other registered hostas in the same AHS section class (II-7, large size):
- H. ‘Justice’ (2003)
- H. ‘Cosmic Sister’ (2006)
- H. ‘Quesadilla’ (2010)
- H. ‘Cajun Sunrise’ (2000)
- H. ‘Fickle Blue Genes’ (2000)
- H. ‘Fifth Element’ (2000)
Related guides
Registration data: AHS Registry #4832