H. ‘Sir Adam’
Hosta ‘Sir Adam’ is a registered cultivar () .
| Year registered | 2016 |
|---|---|
| Section class | II-3 (Large) |
Overview
Registered in 2016, Hosta 'Sir Adam' is a large, fast-growing cultivar derived from a cross between H. 'Sagae' (pod parent) and H. 'Sea Gulf Stream' (pollen parent). It is visually distinguished by its upright habit, broadly ovate green leaves with heavily rippled, golden yellow margins, and a lightly corrugated leaf surface.
In the Garden
'Sir Adam' reaches a mature size of approximately 24 inches (61 cm) in height and 28 inches (71 cm) in diameter, with scapes extending 36 to 40 inches (91 to 102 cm) above the foliage. It performs best in partial to full shade, typical for hostas, and its upright form makes it suitable for mid-border or as a specimen in woodland gardens. The bold leaf coloration pairs well with finer-textured shade perennials such as ferns or Heuchera.
Care Notes
Water regularly to maintain consistent moisture, especially during dry periods. Fertilize in early spring as growth emerges. While not notably resistant, standard slug and deer deterrents may be necessary in areas where these pests are common.
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 | 24 in (61 cm) |
|---|---|
| Clump width | 28 in (71.1 cm) |
| Leaf length | 10 in (25.4 cm) |
| Leaf width | 9 in (22.9 cm) |
| Vein pairs | 12 |
| Leaf | yellow heavily rippled margins; slightly shiny on top; slightly shiny underneath; lightly corrugated overall. |
| Flower scape height | 36–40 in (91.4–101.6 cm) |
| Seasonal colour change | Turns more golden yellow as season progresses. |
| Notable characteristics | A regal golden yellow that's upright and a fast grower. |
From the American Hosta Society Registry record.
Parentage
- Pod parent: H. 'Sagae' — H. ‘Sagae’
- Pollen parent: H. 'Sea Gulf Stream' — H. ‘Sea Gulf Stream’
Similar cultivars
Other registered hostas in the same AHS section class (II-3, large size):
- H. ‘Gold Wing’ (2014)
- H. ‘Rosedale Bright and Sassy’ (1999)
- H. ‘Sun Power’ (1986)
- H. ‘Hobby Time’ (2016)
- H. ‘Island Splendour’ (2016)
- H. ‘Kiss Me Farewell’ (2016)
Related guides
Registration data: AHS Registry #5179. How we check this data.