H. ‘Cosmic Hot Mama’
Hosta ‘Cosmic Hot Mama’ is a registered cultivar () .
| Year registered | 2011 |
|---|---|
| Section class | II-7 (Large) |
Overview
Registered in 2011, 'Cosmic Hot Mama' is a large hosta cultivar resulting from a cross between Hosta 'Hot Flash' (pod parent) and Hosta 'Ma Breeder' (pollen parent). It is visually distinctive for its nearly round, corrugated leaves with flat margins that are streaked in pale yellow, greenish white, and creamy white against a green center, and for its reputation as a superior grower compared to its mother plant.
In the Garden
Reaching a mature diameter of 38 inches (96.5 cm) and height of 20 inches (50.8 cm), this mound-forming cultivar is suitable for mid-border or specimen placement in partial to full shade, typical of hosta-growing zones. Its large, textured leaves provide contrast when paired with finer-textured perennials such as ferns or astilbes. The green scapes, rising 32 to 38 inches (81.3 to 96.5 cm), bear lavender flowers in midsummer.
Care Notes
Provide consistent moisture, especially during dry periods, and apply a balanced fertilizer in early spring as new growth emerges. As with most large-leaved hostas, slug and deer damage may occur and should be managed through routine control measures.
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 | 20 in (50.8 cm) |
|---|---|
| Clump width | 38 in (96.5 cm) |
| Leaf length | 10.75 in (27.3 cm) |
| Leaf width | 9.25 in (23.5 cm) |
| Vein pairs | 14 |
| Leaf | streaked with pale yellow, greenish white, and creamy white flat margins; dull on top; dull underneath; folded, corrugated |
| Flower scape height | 32–38 in (81.3–96.5 cm) |
| Notable characteristics | breeder that is better grower than the mother plant |
From the American Hosta Society Registry record.
Parentage
- Pod parent: H. 'Hot Flash' — H. ‘Hot Flash’
- Pollen parent: H. 'Ma Breeder' — H. ‘Ma Breeder’
Similar cultivars
Other registered hostas in the same AHS section class (II-7, large size):
- H. ‘Quesadilla’ (2010)
- H. ‘Cosmic Sister’ (2006)
- H. ‘Justice’ (2003)
- H. ‘Campfire’ (2011)
- H. ‘Cosmic Spotted Cow’ (2011)
- H. ‘Robb's Dream’ (2011)
Related guides
Registration data: AHS Registry #1182. How we check this data.