H. ‘Urajiro Amagi Iwa’
Hosta ‘Urajiro Amagi Iwa’ is a registered cultivar () , originated by AHS, K. Walek.
| Year registered | 2009 |
|---|---|
| Registrant | AHS, K. Walek |
| Section class | II-1 (Large) |
Overview
Registered in 2009 by K. Walek for the American Hosta Society, 'Urajiro Amagi Iwa' is a large hosta cultivar derived from a white-backed form of Hosta 'Amagi Iwa'. It is visually distinctive for its broadly ovate, blue-green leaves with dark green, moderately rippled margins, a slightly shiny upper surface, and an intense glaucous bloom on the underside.
In the Garden
This cultivar reaches a mature diameter of 32 inches (81.3 cm) and a height of 15 inches (38.1 cm), with a semi-upright, moderate growth rate. It performs best in partial to full shade, where its blue-green foliage and glaucous undersides are most pronounced. Companion plants include ferns, heucheras, and other shade-tolerant perennials; its large size makes it suitable as a specimen or in mixed borders but not for small containers.
Care Notes
Provide consistent moisture, especially during dry periods, and apply a balanced fertilizer in early spring as new growth emerges. Standard slug and deer deterrents are recommended, as both pests may damage the foliage.
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
| Clump height | 15 in (38.1 cm) |
|---|---|
| Clump width | 32 in (81.3 cm) |
| Leaf length | 11 in (27.9 cm) |
| Leaf width | 7 in (17.8 cm) |
| Vein pairs | 10 |
| Leaf | dark green moderately rippled margins; slightly shiny on top; intense glaucous bloom underneath; smooth |
From the American Hosta Society Registry record.
Parentage
- Pod parent: White-backed form of Amagi Iwa (
Registered cultivars that list Hosta ‘Urajiro Amagi Iwa’ as a parent:
- H. ‘Crinkled Leather’ (seedling (pod parent))
Similar cultivars
Other registered hostas in the same AHS section class (II-1, large size):
- H. ‘Aphrodite’ (2009)
- H. ‘Foxfire Irish Moon’ (2003)
- H. ‘Willy Nilly’ (1996)
- H. ‘Nakaimo’ (1986)
- H. ‘Pioneer’ (1984)
- H. ‘Academy Nightfall’ (2009)
Related guides
Registration data: AHS Registry #5906. How we check this data.