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.
This summary was generated with AI from the registry record and has not been reviewed yet; the registry data on this page is the reference. How we use AI.
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. How we check this data.