H. ‘Sum of All’
Hosta ‘Sum of All’ is a registered cultivar () .
| Year registered | 2003 |
|---|---|
| Section class | I-5b (Giant) |
Overview
Registered in 2003, Hosta 'Sum of All' is a sport of Hosta 'Sum and Substance' distinguished by its giant size and blue-green leaves with notably wide golden yellow margins. The margins, approximately 1 inch (2.5 cm) wide, are substantially broader than those of similar cultivars, creating a bold contrast against the medium to dark green leaf centers.
In the Garden
'Sum of All' forms a large mound reaching 32 inches (81.3 cm) in height and 80 inches (203.2 cm) in diameter, with a moderate growth rate. It performs best in partial to full shade, typical for blue-leaved hostas, where the glaucous bloom on the leaf surfaces is best preserved. The substantial leaves, measuring 16 inches (40.6 cm) long and 12 inches (30.5 cm) wide, are broadly ovate with cordate bases, moderately wavy, and lightly corrugated. Its size makes it suitable as a specimen or background plant in shaded borders, paired with ferns or other shade-tolerant perennials. Green scapes rise 30 to 48 inches (76.2 to 121.9 cm) above the foliage.
Care Notes
Provide consistent moisture during dry periods; apply a balanced fertilizer in early spring as new growth emerges. As with many large-leaved hostas, slug and deer damage may occur, particularly in moist conditions.
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 | 32 in (81.3 cm) |
|---|---|
| Clump width | 80 in (203.2 cm) |
| Leaf length | 16 in (40.6 cm) |
| Leaf width | 12 in (30.5 cm) |
| Vein pairs | 16 |
| Leaf | medium to dark green with 1in (2.5cm) wide, golden yellow, flat margins; early glaucous bloom on top; glaucous bloom underneath; moderately wavy and lightly corrugated |
| Flower scape height | 30–48 in (76.2–121.9 cm) |
| Notable characteristics | much wider gold margin than other similar cultivars |
From the American Hosta Society Registry record.
Parentage
- Sport parent: Sport of H. 'Sum and Substance' — H. ‘Sum and Substance’
Registered cultivars that list Hosta ‘Sum of All’ as a parent:
- H. ‘Lady Christin May’ (seedling (pod parent))
Similar cultivars
Other registered hostas in the same AHS section class (I-5b, giant size):
- H. ‘Liberty’ (2000)
- H. ‘David A. Haskell’ (1999)
- H. ‘Frances Williams’ (1986)
- H. ‘Amber Waves of Grain’ (2003)
- H. ‘Bottom Line’ (2003)
- H. ‘Great Arrival’ (2003)
Related guides
Registration data: AHS Registry #5465. How we check this data.