H. ‘Rosedale Knox’
Hosta ‘Rosedale Knox’ is a registered cultivar () .
| Year registered | 1999 |
|---|---|
| Section class | I-3 (Giant) |
Overview
Registered in 1999, Hosta 'Rosedale Knox' is a giant-sized cultivar derived from the hybrid H. 'RD-BS-1'. It is visually distinctive for its large, green leaves with broad, yellow margins, reaching 15 inches (38.1 cm) in length and 8 inches (20.3 cm) in width.
In the Garden
This cultivar's substantial size makes it suitable as a specimen plant or for the back of a mixed border in partial to full shade. Mature clumps can reach a spread of 4 to 5 feet, requiring ample space. It pairs well with ferns, astilbes, and other shade-tolerant perennials that contrast with its bold foliage.
Care Notes
Provide consistent moisture, especially during dry periods, and apply a balanced fertilizer in early spring as new growth emerges. As with most hostas, slug and deer damage may occur and should be managed through routine garden practices.
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 | 15 in (38.1 cm) |
|---|---|
| Leaf width | 8 in (20.3 cm) |
From the American Hosta Society Registry record.
Parentage
- Pod parent: Hybrid of H. 'RD-BS-1'
Similar cultivars
Other registered hostas in the same AHS section class (I-3, giant size):
- H. ‘Leo’ (2009)
- H. ‘Sum and Substance’ (1980)
- H. ‘Diva’ (1999)
- H. ‘Key West’ (1999)
- H. ‘Rosedale Golden Goose’ (1999)
- H. ‘The Sun King’ (1999)
Related guides
Registration data: AHS Registry #4794. How we check this data.